Home / 121,330.62-181,829.82-76,988.52

Finding the Fourth Proportional to 121,330.62, 181,829.82 and 76,988.52

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Solution

The fourth proportional to 121,330.62, 181,829.82 and 76,988.52 is: 115,377.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,330.62 : 181,829.82 = 76,988.52 : x
  2. Step 2: Convert to fraction form
    121,330.62/181,829.82 = 76,988.52/x
  3. Step 3: Cross multiply
    121,330.62x = 181,829.82 × 76,988.52
  4. Step 4: Simplify right side
    121,330.62x = 13,998,808,733.67
  5. Step 5: Solve for x
    x = 13,998,808,733.67/121,330.62
  6. Step 6: Final answer
    x = 115,377.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.