Home / 102,712.54-141,740.65-57,390.90

Finding the Fourth Proportional to 102,712.54, 141,740.65 and 57,390.90

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Solution

The fourth proportional to 102,712.54, 141,740.65 and 57,390.90 is: 79,197.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,712.54 : 141,740.65 = 57,390.90 : x
  2. Step 2: Convert to fraction form
    102,712.54/141,740.65 = 57,390.90/x
  3. Step 3: Cross multiply
    102,712.54x = 141,740.65 × 57,390.90
  4. Step 4: Simplify right side
    102,712.54x = 8,134,623,470.09
  5. Step 5: Solve for x
    x = 8,134,623,470.09/102,712.54
  6. Step 6: Final answer
    x = 79,197.96

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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.