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Finding the Fourth Proportional to 125,589.99, 173,275.10 and 77,141.11

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Solution

The fourth proportional to 125,589.99, 173,275.10 and 77,141.11 is: 106,430.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,589.99 : 173,275.10 = 77,141.11 : x
  2. Step 2: Convert to fraction form
    125,589.99/173,275.10 = 77,141.11/x
  3. Step 3: Cross multiply
    125,589.99x = 173,275.10 × 77,141.11
  4. Step 4: Simplify right side
    125,589.99x = 13,366,633,344.64
  5. Step 5: Solve for x
    x = 13,366,633,344.64/125,589.99
  6. Step 6: Final answer
    x = 106,430.72

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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.