Home / 131,856.78-181,963.23-71,427.43

Finding the Fourth Proportional to 131,856.78, 181,963.23 and 71,427.43

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Solution

The fourth proportional to 131,856.78, 181,963.23 and 71,427.43 is: 98,570.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,856.78 : 181,963.23 = 71,427.43 : x
  2. Step 2: Convert to fraction form
    131,856.78/181,963.23 = 71,427.43/x
  3. Step 3: Cross multiply
    131,856.78x = 181,963.23 × 71,427.43
  4. Step 4: Simplify right side
    131,856.78x = 12,997,164,963.58
  5. Step 5: Solve for x
    x = 12,997,164,963.58/131,856.78
  6. Step 6: Final answer
    x = 98,570.32

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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.