Home / 134,915.52-186,169.28-78,315.84

Finding the Fourth Proportional to 134,915.52, 186,169.28 and 78,315.84

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Solution

The fourth proportional to 134,915.52, 186,169.28 and 78,315.84 is: 108,067.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,915.52 : 186,169.28 = 78,315.84 : x
  2. Step 2: Convert to fraction form
    134,915.52/186,169.28 = 78,315.84/x
  3. Step 3: Cross multiply
    134,915.52x = 186,169.28 × 78,315.84
  4. Step 4: Simplify right side
    134,915.52x = 14,580,003,545.40
  5. Step 5: Solve for x
    x = 14,580,003,545.40/134,915.52
  6. Step 6: Final answer
    x = 108,067.65

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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.