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Finding the Fourth Proportional to 113,077.60, 169,470.60 and 86,651.35

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Solution

The fourth proportional to 113,077.60, 169,470.60 and 86,651.35 is: 129,865.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,077.60 : 169,470.60 = 86,651.35 : x
  2. Step 2: Convert to fraction form
    113,077.60/169,470.60 = 86,651.35/x
  3. Step 3: Cross multiply
    113,077.60x = 169,470.60 × 86,651.35
  4. Step 4: Simplify right side
    113,077.60x = 14,684,856,275.31
  5. Step 5: Solve for x
    x = 14,684,856,275.31/113,077.60
  6. Step 6: Final answer
    x = 129,865.30

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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.