Home / 487,136.10-730,618.02-132,177.78

Finding the Fourth Proportional to 487,136.10, 730,618.02 and 132,177.78

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Solution

The fourth proportional to 487,136.10, 730,618.02 and 132,177.78 is: 198,243.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,136.10 : 730,618.02 = 132,177.78 : x
  2. Step 2: Convert to fraction form
    487,136.10/730,618.02 = 132,177.78/x
  3. Step 3: Cross multiply
    487,136.10x = 730,618.02 × 132,177.78
  4. Step 4: Simplify right side
    487,136.10x = 96,571,467,911.60
  5. Step 5: Solve for x
    x = 96,571,467,911.60/487,136.10
  6. Step 6: Final answer
    x = 198,243.30

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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.