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Finding the Fourth Proportional to 113,337.20, 169,811.40 and 54,045.20

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Solution

The fourth proportional to 113,337.20, 169,811.40 and 54,045.20 is: 80,975.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,337.20 : 169,811.40 = 54,045.20 : x
  2. Step 2: Convert to fraction form
    113,337.20/169,811.40 = 54,045.20/x
  3. Step 3: Cross multiply
    113,337.20x = 169,811.40 × 54,045.20
  4. Step 4: Simplify right side
    113,337.20x = 9,177,491,075.28
  5. Step 5: Solve for x
    x = 9,177,491,075.28/113,337.20
  6. Step 6: Final answer
    x = 80,975.10

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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.