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Finding the Fourth Proportional to 113,108.40, 169,711.20 and 57,704.40

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Solution

The fourth proportional to 113,108.40, 169,711.20 and 57,704.40 is: 86,581.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,108.40 : 169,711.20 = 57,704.40 : x
  2. Step 2: Convert to fraction form
    113,108.40/169,711.20 = 57,704.40/x
  3. Step 3: Cross multiply
    113,108.40x = 169,711.20 × 57,704.40
  4. Step 4: Simplify right side
    113,108.40x = 9,793,082,969.28
  5. Step 5: Solve for x
    x = 9,793,082,969.28/113,108.40
  6. Step 6: Final answer
    x = 86,581.39

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1.5x scale

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.