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Finding the Fourth Proportional to 125,590.99, 173,276.48 and 77,142.11

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Solution

The fourth proportional to 125,590.99, 173,276.48 and 77,142.11 is: 106,432.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,590.99 : 173,276.48 = 77,142.11 : x
  2. Step 2: Convert to fraction form
    125,590.99/173,276.48 = 77,142.11/x
  3. Step 3: Cross multiply
    125,590.99x = 173,276.48 × 77,142.11
  4. Step 4: Simplify right side
    125,590.99x = 13,366,913,280.57
  5. Step 5: Solve for x
    x = 13,366,913,280.57/125,590.99
  6. Step 6: Final answer
    x = 106,432.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.