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Finding the Fourth Proportional to 149,425.71, 206,207.55 and 84,895.06

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Solution

The fourth proportional to 149,425.71, 206,207.55 and 84,895.06 is: 117,155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,425.71 : 206,207.55 = 84,895.06 : x
  2. Step 2: Convert to fraction form
    149,425.71/206,207.55 = 84,895.06/x
  3. Step 3: Cross multiply
    149,425.71x = 206,207.55 × 84,895.06
  4. Step 4: Simplify right side
    149,425.71x = 17,506,002,132.54
  5. Step 5: Solve for x
    x = 17,506,002,132.54/149,425.71
  6. Step 6: Final answer
    x = 117,155.22

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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.