Home / 131,961.76-182,084.15-78,259.97

Finding the Fourth Proportional to 131,961.76, 182,084.15 and 78,259.97

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Solution

The fourth proportional to 131,961.76, 182,084.15 and 78,259.97 is: 107,985.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,961.76 : 182,084.15 = 78,259.97 : x
  2. Step 2: Convert to fraction form
    131,961.76/182,084.15 = 78,259.97/x
  3. Step 3: Cross multiply
    131,961.76x = 182,084.15 × 78,259.97
  4. Step 4: Simplify right side
    131,961.76x = 14,249,900,767.34
  5. Step 5: Solve for x
    x = 14,249,900,767.34/131,961.76
  6. Step 6: Final answer
    x = 107,985.08

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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.