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Finding the Fourth Proportional to 125,658.30, 188,520.26 and 65,690.76

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Solution

The fourth proportional to 125,658.30, 188,520.26 and 65,690.76 is: 98,553.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,658.30 : 188,520.26 = 65,690.76 : x
  2. Step 2: Convert to fraction form
    125,658.30/188,520.26 = 65,690.76/x
  3. Step 3: Cross multiply
    125,658.30x = 188,520.26 × 65,690.76
  4. Step 4: Simplify right side
    125,658.30x = 12,384,038,826.34
  5. Step 5: Solve for x
    x = 12,384,038,826.34/125,658.30
  6. Step 6: Final answer
    x = 98,553.29

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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.