Home / 129,992.61-179,390.99-76,278.52

Finding the Fourth Proportional to 129,992.61, 179,390.99 and 76,278.52

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Solution

The fourth proportional to 129,992.61, 179,390.99 and 76,278.52 is: 105,265.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,992.61 : 179,390.99 = 76,278.52 : x
  2. Step 2: Convert to fraction form
    129,992.61/179,390.99 = 76,278.52/x
  3. Step 3: Cross multiply
    129,992.61x = 179,390.99 × 76,278.52
  4. Step 4: Simplify right side
    129,992.61x = 13,683,679,633.47
  5. Step 5: Solve for x
    x = 13,683,679,633.47/129,992.61
  6. Step 6: Final answer
    x = 105,265.05

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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.