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Finding the Fourth Proportional to 121,240.67, 181,861.35 and 42,354.90

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Solution

The fourth proportional to 121,240.67, 181,861.35 and 42,354.90 is: 63,532.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,240.67 : 181,861.35 = 42,354.90 : x
  2. Step 2: Convert to fraction form
    121,240.67/181,861.35 = 42,354.90/x
  3. Step 3: Cross multiply
    121,240.67x = 181,861.35 × 42,354.90
  4. Step 4: Simplify right side
    121,240.67x = 7,702,719,372.53
  5. Step 5: Solve for x
    x = 7,702,719,372.53/121,240.67
  6. Step 6: Final answer
    x = 63,532.47

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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.