Home / 89,644,538.70-134,466,808.05-81,991,788.30

Finding the Fourth Proportional to 89,644,538.70, 134,466,808.05 and 81,991,788.30

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Solution

The fourth proportional to 89,644,538.70, 134,466,808.05 and 81,991,788.30 is: 122,987,682.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,644,538.70 : 134,466,808.05 = 81,991,788.30 : x
  2. Step 2: Convert to fraction form
    89,644,538.70/134,466,808.05 = 81,991,788.30/x
  3. Step 3: Cross multiply
    89,644,538.70x = 134,466,808.05 × 81,991,788.30
  4. Step 4: Simplify right side
    89,644,538.70x = 11,025,174,059,012,336
  5. Step 5: Solve for x
    x = 11,025,174,059,012,336/89,644,538.70
  6. Step 6: Final answer
    x = 122,987,682.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.