Home / 131,861.97-181,970.06-71,432.60

Finding the Fourth Proportional to 131,861.97, 181,970.06 and 71,432.60

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Solution

The fourth proportional to 131,861.97, 181,970.06 and 71,432.60 is: 98,577.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,861.97 : 181,970.06 = 71,432.60 : x
  2. Step 2: Convert to fraction form
    131,861.97/181,970.06 = 71,432.60/x
  3. Step 3: Cross multiply
    131,861.97x = 181,970.06 × 71,432.60
  4. Step 4: Simplify right side
    131,861.97x = 12,998,594,507.96
  5. Step 5: Solve for x
    x = 12,998,594,507.96/131,861.97
  6. Step 6: Final answer
    x = 98,577.28

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1.5x scale

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.