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Finding the Fourth Proportional to 102,487.58, 153,658.76 and 45,530.20

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Solution

The fourth proportional to 102,487.58, 153,658.76 and 45,530.20 is: 68,263.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,487.58 : 153,658.76 = 45,530.20 : x
  2. Step 2: Convert to fraction form
    102,487.58/153,658.76 = 45,530.20/x
  3. Step 3: Cross multiply
    102,487.58x = 153,658.76 × 45,530.20
  4. Step 4: Simplify right side
    102,487.58x = 6,996,113,306.26
  5. Step 5: Solve for x
    x = 6,996,113,306.26/102,487.58
  6. Step 6: Final answer
    x = 68,263.04

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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.