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Finding the Fourth Proportional to 113,335.20, 169,808.40 and 54,043.20

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Solution

The fourth proportional to 113,335.20, 169,808.40 and 54,043.20 is: 80,972.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,335.20 : 169,808.40 = 54,043.20 : x
  2. Step 2: Convert to fraction form
    113,335.20/169,808.40 = 54,043.20/x
  3. Step 3: Cross multiply
    113,335.20x = 169,808.40 × 54,043.20
  4. Step 4: Simplify right side
    113,335.20x = 9,176,989,322.88
  5. Step 5: Solve for x
    x = 9,176,989,322.88/113,335.20
  6. Step 6: Final answer
    x = 80,972.10

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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.