Home / 134,972.58-186,262.17-78,387.60

Finding the Fourth Proportional to 134,972.58, 186,262.17 and 78,387.60

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Solution

The fourth proportional to 134,972.58, 186,262.17 and 78,387.60 is: 108,174.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,972.58 : 186,262.17 = 78,387.60 : x
  2. Step 2: Convert to fraction form
    134,972.58/186,262.17 = 78,387.60/x
  3. Step 3: Cross multiply
    134,972.58x = 186,262.17 × 78,387.60
  4. Step 4: Simplify right side
    134,972.58x = 14,600,643,833.90
  5. Step 5: Solve for x
    x = 14,600,643,833.90/134,972.58
  6. Step 6: Final answer
    x = 108,174.89

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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.