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Finding the Fourth Proportional to 123,385.28, 185,000.16 and 104,671.88

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Solution

The fourth proportional to 123,385.28, 185,000.16 and 104,671.88 is: 156,941.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,385.28 : 185,000.16 = 104,671.88 : x
  2. Step 2: Convert to fraction form
    123,385.28/185,000.16 = 104,671.88/x
  3. Step 3: Cross multiply
    123,385.28x = 185,000.16 × 104,671.88
  4. Step 4: Simplify right side
    123,385.28x = 19,364,314,547.50
  5. Step 5: Solve for x
    x = 19,364,314,547.50/123,385.28
  6. Step 6: Final answer
    x = 156,941.85

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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.