Home / 102,691.36-141,712.50-57,370.00

Finding the Fourth Proportional to 102,691.36, 141,712.50 and 57,370.00

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Solution

The fourth proportional to 102,691.36, 141,712.50 and 57,370.00 is: 79,169.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,691.36 : 141,712.50 = 57,370.00 : x
  2. Step 2: Convert to fraction form
    102,691.36/141,712.50 = 57,370.00/x
  3. Step 3: Cross multiply
    102,691.36x = 141,712.50 × 57,370.00
  4. Step 4: Simplify right side
    102,691.36x = 8,130,045,416.44
  5. Step 5: Solve for x
    x = 8,130,045,416.44/102,691.36
  6. Step 6: Final answer
    x = 79,169.72

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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.