Home / 115,159.47-158,847.35-79,287.18

Finding the Fourth Proportional to 115,159.47, 158,847.35 and 79,287.18

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Solution

The fourth proportional to 115,159.47, 158,847.35 and 79,287.18 is: 109,366.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,159.47 : 158,847.35 = 79,287.18 : x
  2. Step 2: Convert to fraction form
    115,159.47/158,847.35 = 79,287.18/x
  3. Step 3: Cross multiply
    115,159.47x = 158,847.35 × 79,287.18
  4. Step 4: Simplify right side
    115,159.47x = 12,594,558,035.54
  5. Step 5: Solve for x
    x = 12,594,558,035.54/115,159.47
  6. Step 6: Final answer
    x = 109,366.24

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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.