Home / 102,726.60-141,760.98-57,405.48

Finding the Fourth Proportional to 102,726.60, 141,760.98 and 57,405.48

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Solution

The fourth proportional to 102,726.60, 141,760.98 and 57,405.48 is: 79,218.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,726.60 : 141,760.98 = 57,405.48 : x
  2. Step 2: Convert to fraction form
    102,726.60/141,760.98 = 57,405.48/x
  3. Step 3: Cross multiply
    102,726.60x = 141,760.98 × 57,405.48
  4. Step 4: Simplify right side
    102,726.60x = 8,137,857,102.17
  5. Step 5: Solve for x
    x = 8,137,857,102.17/102,726.60
  6. Step 6: Final answer
    x = 79,218.60

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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.