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Finding the Fourth Proportional to 125,597.80, 188,105.10 and 85,940.20

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Solution

The fourth proportional to 125,597.80, 188,105.10 and 85,940.20 is: 128,710.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,597.80 : 188,105.10 = 85,940.20 : x
  2. Step 2: Convert to fraction form
    125,597.80/188,105.10 = 85,940.20/x
  3. Step 3: Cross multiply
    125,597.80x = 188,105.10 × 85,940.20
  4. Step 4: Simplify right side
    125,597.80x = 16,165,789,915.02
  5. Step 5: Solve for x
    x = 16,165,789,915.02/125,597.80
  6. Step 6: Final answer
    x = 128,710.77

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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.