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Finding the Fourth Proportional to 124,590.60, 186,885.90 and 87,192.90

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Solution

The fourth proportional to 124,590.60, 186,885.90 and 87,192.90 is: 130,789.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,590.60 : 186,885.90 = 87,192.90 : x
  2. Step 2: Convert to fraction form
    124,590.60/186,885.90 = 87,192.90/x
  3. Step 3: Cross multiply
    124,590.60x = 186,885.90 × 87,192.90
  4. Step 4: Simplify right side
    124,590.60x = 16,295,123,590.11
  5. Step 5: Solve for x
    x = 16,295,123,590.11/124,590.60
  6. Step 6: Final answer
    x = 130,789.35

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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.