Home / 120,151.30-165,802.12-66,433.10

Finding the Fourth Proportional to 120,151.30, 165,802.12 and 66,433.10

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Solution

The fourth proportional to 120,151.30, 165,802.12 and 66,433.10 is: 91,673.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,151.30 : 165,802.12 = 66,433.10 : x
  2. Step 2: Convert to fraction form
    120,151.30/165,802.12 = 66,433.10/x
  3. Step 3: Cross multiply
    120,151.30x = 165,802.12 × 66,433.10
  4. Step 4: Simplify right side
    120,151.30x = 11,014,748,818.17
  5. Step 5: Solve for x
    x = 11,014,748,818.17/120,151.30
  6. Step 6: Final answer
    x = 91,673.99

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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.