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Finding the Fourth Proportional to 113,023.20, 169,534.80 and 65,719.20

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Solution

The fourth proportional to 113,023.20, 169,534.80 and 65,719.20 is: 98,578.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,023.20 : 169,534.80 = 65,719.20 : x
  2. Step 2: Convert to fraction form
    113,023.20/169,534.80 = 65,719.20/x
  3. Step 3: Cross multiply
    113,023.20x = 169,534.80 × 65,719.20
  4. Step 4: Simplify right side
    113,023.20x = 11,141,691,428.16
  5. Step 5: Solve for x
    x = 11,141,691,428.16/113,023.20
  6. Step 6: Final answer
    x = 98,578.80

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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.