Home / 129,855.47-179,149.65-75,398.35

Finding the Fourth Proportional to 129,855.47, 179,149.65 and 75,398.35

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Solution

The fourth proportional to 129,855.47, 179,149.65 and 75,398.35 is: 104,020.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,855.47 : 179,149.65 = 75,398.35 : x
  2. Step 2: Convert to fraction form
    129,855.47/179,149.65 = 75,398.35/x
  3. Step 3: Cross multiply
    129,855.47x = 179,149.65 × 75,398.35
  4. Step 4: Simplify right side
    129,855.47x = 13,507,587,538.62
  5. Step 5: Solve for x
    x = 13,507,587,538.62/129,855.47
  6. Step 6: Final answer
    x = 104,020.16

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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.