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Finding the Fourth Proportional to 115,341.60, 159,171.12 and 65,040.24

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Solution

The fourth proportional to 115,341.60, 159,171.12 and 65,040.24 is: 89,755.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,341.60 : 159,171.12 = 65,040.24 : x
  2. Step 2: Convert to fraction form
    115,341.60/159,171.12 = 65,040.24/x
  3. Step 3: Cross multiply
    115,341.60x = 159,171.12 × 65,040.24
  4. Step 4: Simplify right side
    115,341.60x = 10,352,527,845.87
  5. Step 5: Solve for x
    x = 10,352,527,845.87/115,341.60
  6. Step 6: Final answer
    x = 89,755.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.