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Finding the Fourth Proportional to 113,129.60, 169,348.80 and 88,246.40

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Solution

The fourth proportional to 113,129.60, 169,348.80 and 88,246.40 is: 132,100.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,129.60 : 169,348.80 = 88,246.40 : x
  2. Step 2: Convert to fraction form
    113,129.60/169,348.80 = 88,246.40/x
  3. Step 3: Cross multiply
    113,129.60x = 169,348.80 × 88,246.40
  4. Step 4: Simplify right side
    113,129.60x = 14,944,421,944.32
  5. Step 5: Solve for x
    x = 14,944,421,944.32/113,129.60
  6. Step 6: Final answer
    x = 132,100.02

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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.