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Finding the Fourth Proportional to 170,721.40, 256,082.10 and 65,542.90

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Solution

The fourth proportional to 170,721.40, 256,082.10 and 65,542.90 is: 98,314.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,721.40 : 256,082.10 = 65,542.90 : x
  2. Step 2: Convert to fraction form
    170,721.40/256,082.10 = 65,542.90/x
  3. Step 3: Cross multiply
    170,721.40x = 256,082.10 × 65,542.90
  4. Step 4: Simplify right side
    170,721.40x = 16,784,363,472.09
  5. Step 5: Solve for x
    x = 16,784,363,472.09/170,721.40
  6. Step 6: Final answer
    x = 98,314.35

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1.5x scale

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.