Home / 137,715.90-206,136.45-127,218.30

Finding the Fourth Proportional to 137,715.90, 206,136.45 and 127,218.30

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Solution

The fourth proportional to 137,715.90, 206,136.45 and 127,218.30 is: 190,423.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,715.90 : 206,136.45 = 127,218.30 : x
  2. Step 2: Convert to fraction form
    137,715.90/206,136.45 = 127,218.30/x
  3. Step 3: Cross multiply
    137,715.90x = 206,136.45 × 127,218.30
  4. Step 4: Simplify right side
    137,715.90x = 26,224,328,737.04
  5. Step 5: Solve for x
    x = 26,224,328,737.04/137,715.90
  6. Step 6: Final answer
    x = 190,423.39

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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.