Home / 205,711.03-284,056.43-129,357.90

Finding the Fourth Proportional to 205,711.03, 284,056.43 and 129,357.90

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Solution

The fourth proportional to 205,711.03, 284,056.43 and 129,357.90 is: 178,624.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,711.03 : 284,056.43 = 129,357.90 : x
  2. Step 2: Convert to fraction form
    205,711.03/284,056.43 = 129,357.90/x
  3. Step 3: Cross multiply
    205,711.03x = 284,056.43 × 129,357.90
  4. Step 4: Simplify right side
    205,711.03x = 36,744,943,266.30
  5. Step 5: Solve for x
    x = 36,744,943,266.30/205,711.03
  6. Step 6: Final answer
    x = 178,624.08

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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.