Home / 102,705.20-141,719.08-57,377.52

Finding the Fourth Proportional to 102,705.20, 141,719.08 and 57,377.52

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Solution

The fourth proportional to 102,705.20, 141,719.08 and 57,377.52 is: 79,173.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,705.20 : 141,719.08 = 57,377.52 : x
  2. Step 2: Convert to fraction form
    102,705.20/141,719.08 = 57,377.52/x
  3. Step 3: Cross multiply
    102,705.20x = 141,719.08 × 57,377.52
  4. Step 4: Simplify right side
    102,705.20x = 8,131,489,347.08
  5. Step 5: Solve for x
    x = 8,131,489,347.08/102,705.20
  6. Step 6: Final answer
    x = 79,173.10

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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.