Home / 127,234.08-175,503.60-81,972

Finding the Fourth Proportional to 127,234.08, 175,503.60 and 81,972

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Solution

The fourth proportional to 127,234.08, 175,503.60 and 81,972 is: 113,070.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,234.08 : 175,503.60 = 81,972 : x
  2. Step 2: Convert to fraction form
    127,234.08/175,503.60 = 81,972/x
  3. Step 3: Cross multiply
    127,234.08x = 175,503.60 × 81,972
  4. Step 4: Simplify right side
    127,234.08x = 14,386,381,099.20
  5. Step 5: Solve for x
    x = 14,386,381,099.20/127,234.08
  6. Step 6: Final answer
    x = 113,070.19

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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.