Home / 141,913.28-212,869.92-78,703.52

Finding the Fourth Proportional to 141,913.28, 212,869.92 and 78,703.52

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Solution

The fourth proportional to 141,913.28, 212,869.92 and 78,703.52 is: 118,055.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,913.28 : 212,869.92 = 78,703.52 : x
  2. Step 2: Convert to fraction form
    141,913.28/212,869.92 = 78,703.52/x
  3. Step 3: Cross multiply
    141,913.28x = 212,869.92 × 78,703.52
  4. Step 4: Simplify right side
    141,913.28x = 16,753,612,006.12
  5. Step 5: Solve for x
    x = 16,753,612,006.12/141,913.28
  6. Step 6: Final answer
    x = 118,055.28

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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.