Home / 102,617.70-141,671.28-78,227.16

Finding the Fourth Proportional to 102,617.70, 141,671.28 and 78,227.16

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Solution

The fourth proportional to 102,617.70, 141,671.28 and 78,227.16 is: 107,998.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,617.70 : 141,671.28 = 78,227.16 : x
  2. Step 2: Convert to fraction form
    102,617.70/141,671.28 = 78,227.16/x
  3. Step 3: Cross multiply
    102,617.70x = 141,671.28 × 78,227.16
  4. Step 4: Simplify right side
    102,617.70x = 11,082,541,887.96
  5. Step 5: Solve for x
    x = 11,082,541,887.96/102,617.70
  6. Step 6: Final answer
    x = 107,998.35

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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.