Home / 121,037.20-181,337.10-98,729.80

Finding the Fourth Proportional to 121,037.20, 181,337.10 and 98,729.80

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Solution

The fourth proportional to 121,037.20, 181,337.10 and 98,729.80 is: 147,916.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,037.20 : 181,337.10 = 98,729.80 : x
  2. Step 2: Convert to fraction form
    121,037.20/181,337.10 = 98,729.80/x
  3. Step 3: Cross multiply
    121,037.20x = 181,337.10 × 98,729.80
  4. Step 4: Simplify right side
    121,037.20x = 17,903,375,615.58
  5. Step 5: Solve for x
    x = 17,903,375,615.58/121,037.20
  6. Step 6: Final answer
    x = 147,916.31

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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.