Home / 141,862.32-212,876.40-78,735.60

Finding the Fourth Proportional to 141,862.32, 212,876.40 and 78,735.60

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Solution

The fourth proportional to 141,862.32, 212,876.40 and 78,735.60 is: 118,149.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,862.32 : 212,876.40 = 78,735.60 : x
  2. Step 2: Convert to fraction form
    141,862.32/212,876.40 = 78,735.60/x
  3. Step 3: Cross multiply
    141,862.32x = 212,876.40 × 78,735.60
  4. Step 4: Simplify right side
    141,862.32x = 16,760,951,079.84
  5. Step 5: Solve for x
    x = 16,760,951,079.84/141,862.32
  6. Step 6: Final answer
    x = 118,149.42

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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.