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Finding the Fourth Proportional to 115,275.61, 159,080.01 and 64,288.39

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Solution

The fourth proportional to 115,275.61, 159,080.01 and 64,288.39 is: 88,717.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,275.61 : 159,080.01 = 64,288.39 : x
  2. Step 2: Convert to fraction form
    115,275.61/159,080.01 = 64,288.39/x
  3. Step 3: Cross multiply
    115,275.61x = 159,080.01 × 64,288.39
  4. Step 4: Simplify right side
    115,275.61x = 10,226,996,928.68
  5. Step 5: Solve for x
    x = 10,226,996,928.68/115,275.61
  6. Step 6: Final answer
    x = 88,717.79

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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.