Home / 131,981.22-182,086.35-86,683.74

Finding the Fourth Proportional to 131,981.22, 182,086.35 and 86,683.74

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Solution

The fourth proportional to 131,981.22, 182,086.35 and 86,683.74 is: 119,592.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,981.22 : 182,086.35 = 86,683.74 : x
  2. Step 2: Convert to fraction form
    131,981.22/182,086.35 = 86,683.74/x
  3. Step 3: Cross multiply
    131,981.22x = 182,086.35 × 86,683.74
  4. Step 4: Simplify right side
    131,981.22x = 15,783,925,820.95
  5. Step 5: Solve for x
    x = 15,783,925,820.95/131,981.22
  6. Step 6: Final answer
    x = 119,592.21

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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.