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Finding the Fourth Proportional to 145,712.52, 218,598.62 and 61,472.70

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Solution

The fourth proportional to 145,712.52, 218,598.62 and 61,472.70 is: 92,221.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,712.52 : 218,598.62 = 61,472.70 : x
  2. Step 2: Convert to fraction form
    145,712.52/218,598.62 = 61,472.70/x
  3. Step 3: Cross multiply
    145,712.52x = 218,598.62 × 61,472.70
  4. Step 4: Simplify right side
    145,712.52x = 13,437,846,984.18
  5. Step 5: Solve for x
    x = 13,437,846,984.18/145,712.52
  6. Step 6: Final answer
    x = 92,221.64

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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.