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Finding the Fourth Proportional to 125,577.70, 188,512.35 and 72,312.10

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Solution

The fourth proportional to 125,577.70, 188,512.35 and 72,312.10 is: 108,552.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,577.70 : 188,512.35 = 72,312.10 : x
  2. Step 2: Convert to fraction form
    125,577.70/188,512.35 = 72,312.10/x
  3. Step 3: Cross multiply
    125,577.70x = 188,512.35 × 72,312.10
  4. Step 4: Simplify right side
    125,577.70x = 13,631,723,904.44
  5. Step 5: Solve for x
    x = 13,631,723,904.44/125,577.70
  6. Step 6: Final answer
    x = 108,552.11

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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.