Home / 142,984.80-197,316.60-79,321.20

Finding the Fourth Proportional to 142,984.80, 197,316.60 and 79,321.20

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Solution

The fourth proportional to 142,984.80, 197,316.60 and 79,321.20 is: 109,461.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,984.80 : 197,316.60 = 79,321.20 : x
  2. Step 2: Convert to fraction form
    142,984.80/197,316.60 = 79,321.20/x
  3. Step 3: Cross multiply
    142,984.80x = 197,316.60 × 79,321.20
  4. Step 4: Simplify right side
    142,984.80x = 15,651,389,491.92
  5. Step 5: Solve for x
    x = 15,651,389,491.92/142,984.80
  6. Step 6: Final answer
    x = 109,461.91

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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.