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Finding the Fourth Proportional to 160,143.55, 240,242.96 and 65,425.21

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Solution

The fourth proportional to 160,143.55, 240,242.96 and 65,425.21 is: 98,149.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,143.55 : 240,242.96 = 65,425.21 : x
  2. Step 2: Convert to fraction form
    160,143.55/240,242.96 = 65,425.21/x
  3. Step 3: Cross multiply
    160,143.55x = 240,242.96 × 65,425.21
  4. Step 4: Simplify right side
    160,143.55x = 15,717,945,781.90
  5. Step 5: Solve for x
    x = 15,717,945,781.90/160,143.55
  6. Step 6: Final answer
    x = 98,149.10

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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.