Home / 121,721.60-182,732.76-57,740.92

Finding the Fourth Proportional to 121,721.60, 182,732.76 and 57,740.92

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Solution

The fourth proportional to 121,721.60, 182,732.76 and 57,740.92 is: 86,682.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,721.60 : 182,732.76 = 57,740.92 : x
  2. Step 2: Convert to fraction form
    121,721.60/182,732.76 = 57,740.92/x
  3. Step 3: Cross multiply
    121,721.60x = 182,732.76 × 57,740.92
  4. Step 4: Simplify right side
    121,721.60x = 10,551,157,219.71
  5. Step 5: Solve for x
    x = 10,551,157,219.71/121,721.60
  6. Step 6: Final answer
    x = 86,682.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.