Home / 108,315.52-149,513.04-74,436.18

Finding the Fourth Proportional to 108,315.52, 149,513.04 and 74,436.18

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Solution

The fourth proportional to 108,315.52, 149,513.04 and 74,436.18 is: 102,747.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,315.52 : 149,513.04 = 74,436.18 : x
  2. Step 2: Convert to fraction form
    108,315.52/149,513.04 = 74,436.18/x
  3. Step 3: Cross multiply
    108,315.52x = 149,513.04 × 74,436.18
  4. Step 4: Simplify right side
    108,315.52x = 11,129,179,557.79
  5. Step 5: Solve for x
    x = 11,129,179,557.79/108,315.52
  6. Step 6: Final answer
    x = 102,747.78

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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.