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Finding the Fourth Proportional to 113,150.40, 169,610.40 and 66,379.20

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Solution

The fourth proportional to 113,150.40, 169,610.40 and 66,379.20 is: 99,501.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,150.40 : 169,610.40 = 66,379.20 : x
  2. Step 2: Convert to fraction form
    113,150.40/169,610.40 = 66,379.20/x
  3. Step 3: Cross multiply
    113,150.40x = 169,610.40 × 66,379.20
  4. Step 4: Simplify right side
    113,150.40x = 11,258,602,663.68
  5. Step 5: Solve for x
    x = 11,258,602,663.68/113,150.40
  6. Step 6: Final answer
    x = 99,501.22

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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.