Home / 115,330.32-159,165-64,359.72

Finding the Fourth Proportional to 115,330.32, 159,165 and 64,359.72

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Solution

The fourth proportional to 115,330.32, 159,165 and 64,359.72 is: 88,821.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,330.32 : 159,165 = 64,359.72 : x
  2. Step 2: Convert to fraction form
    115,330.32/159,165 = 64,359.72/x
  3. Step 3: Cross multiply
    115,330.32x = 159,165 × 64,359.72
  4. Step 4: Simplify right side
    115,330.32x = 10,243,814,833.80
  5. Step 5: Solve for x
    x = 10,243,814,833.80/115,330.32
  6. Step 6: Final answer
    x = 88,821.52

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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.