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Finding the Fourth Proportional to 115,395.60, 159,239.45 and 64,411.62

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Solution

The fourth proportional to 115,395.60, 159,239.45 and 64,411.62 is: 88,884.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,395.60 : 159,239.45 = 64,411.62 : x
  2. Step 2: Convert to fraction form
    115,395.60/159,239.45 = 64,411.62/x
  3. Step 3: Cross multiply
    115,395.60x = 159,239.45 × 64,411.62
  4. Step 4: Simplify right side
    115,395.60x = 10,256,870,023.20
  5. Step 5: Solve for x
    x = 10,256,870,023.20/115,395.60
  6. Step 6: Final answer
    x = 88,884.41

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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.