Home / 131,787.17-181,865.52-71,356.57

Finding the Fourth Proportional to 131,787.17, 181,865.52 and 71,356.57

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Solution

The fourth proportional to 131,787.17, 181,865.52 and 71,356.57 is: 98,471.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,787.17 : 181,865.52 = 71,356.57 : x
  2. Step 2: Convert to fraction form
    131,787.17/181,865.52 = 71,356.57/x
  3. Step 3: Cross multiply
    131,787.17x = 181,865.52 × 71,356.57
  4. Step 4: Simplify right side
    131,787.17x = 12,977,299,708.47
  5. Step 5: Solve for x
    x = 12,977,299,708.47/131,787.17
  6. Step 6: Final answer
    x = 98,471.65

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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.