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Finding the Fourth Proportional to 142,751.53, 214,127.45 and 42,911.71

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Solution

The fourth proportional to 142,751.53, 214,127.45 and 42,911.71 is: 64,367.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,751.53 : 214,127.45 = 42,911.71 : x
  2. Step 2: Convert to fraction form
    142,751.53/214,127.45 = 42,911.71/x
  3. Step 3: Cross multiply
    142,751.53x = 214,127.45 × 42,911.71
  4. Step 4: Simplify right side
    142,751.53x = 9,188,574,849.97
  5. Step 5: Solve for x
    x = 9,188,574,849.97/142,751.53
  6. Step 6: Final answer
    x = 64,367.61

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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.