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Finding the Fourth Proportional to 125,360.92, 187,566.72 and 77,340.88

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Solution

The fourth proportional to 125,360.92, 187,566.72 and 77,340.88 is: 115,718.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,360.92 : 187,566.72 = 77,340.88 : x
  2. Step 2: Convert to fraction form
    125,360.92/187,566.72 = 77,340.88/x
  3. Step 3: Cross multiply
    125,360.92x = 187,566.72 × 77,340.88
  4. Step 4: Simplify right side
    125,360.92x = 14,506,575,183.51
  5. Step 5: Solve for x
    x = 14,506,575,183.51/125,360.92
  6. Step 6: Final answer
    x = 115,718.48

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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.