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Finding the Fourth Proportional to 125,862.90, 188,940.15 and 75,999.30

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Solution

The fourth proportional to 125,862.90, 188,940.15 and 75,999.30 is: 114,086.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,862.90 : 188,940.15 = 75,999.30 : x
  2. Step 2: Convert to fraction form
    125,862.90/188,940.15 = 75,999.30/x
  3. Step 3: Cross multiply
    125,862.90x = 188,940.15 × 75,999.30
  4. Step 4: Simplify right side
    125,862.90x = 14,359,319,141.90
  5. Step 5: Solve for x
    x = 14,359,319,141.90/125,862.90
  6. Step 6: Final answer
    x = 114,086.99

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1.5x scale

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.