Home / 120,243,942,225.78-165,937,028,010.93-66,779,914,743.78

Finding the Fourth Proportional to 120,243,942,225.78, 165,937,028,010.93 and 66,779,914,743.78

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Solution

The fourth proportional to 120,243,942,225.78, 165,937,028,010.93 and 66,779,914,743.78 is: 92,156,497,685.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,243,942,225.78 : 165,937,028,010.93 = 66,779,914,743.78 : x
  2. Step 2: Convert to fraction form
    120,243,942,225.78/165,937,028,010.93 = 66,779,914,743.78/x
  3. Step 3: Cross multiply
    120,243,942,225.78x = 165,937,028,010.93 × 66,779,914,743.78
  4. Step 4: Simplify right side
    120,243,942,225.78x = 11,081,260,583,406,138,294,272
  5. Step 5: Solve for x
    x = 11,081,260,583,406,138,294,272/120,243,942,225.78
  6. Step 6: Final answer
    x = 92,156,497,685.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.