Home / 231,011.98-318,793.08-129,039.28

Finding the Fourth Proportional to 231,011.98, 318,793.08 and 129,039.28

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Solution

The fourth proportional to 231,011.98, 318,793.08 and 129,039.28 is: 178,072.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,011.98 : 318,793.08 = 129,039.28 : x
  2. Step 2: Convert to fraction form
    231,011.98/318,793.08 = 129,039.28/x
  3. Step 3: Cross multiply
    231,011.98x = 318,793.08 × 129,039.28
  4. Step 4: Simplify right side
    231,011.98x = 41,136,829,512.18
  5. Step 5: Solve for x
    x = 41,136,829,512.18/231,011.98
  6. Step 6: Final answer
    x = 178,072.28

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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.