Home / 125,500,509.10-173,136,979.60-78,375,769.97

Finding the Fourth Proportional to 125,500,509.10, 173,136,979.60 and 78,375,769.97

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Solution

The fourth proportional to 125,500,509.10, 173,136,979.60 and 78,375,769.97 is: 108,125,012.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,500,509.10 : 173,136,979.60 = 78,375,769.97 : x
  2. Step 2: Convert to fraction form
    125,500,509.10/173,136,979.60 = 78,375,769.97/x
  3. Step 3: Cross multiply
    125,500,509.10x = 173,136,979.60 × 78,375,769.97
  4. Step 4: Simplify right side
    125,500,509.10x = 13,569,744,086,667,084
  5. Step 5: Solve for x
    x = 13,569,744,086,667,084/125,500,509.10
  6. Step 6: Final answer
    x = 108,125,012.27

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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.