Home / 142,810.08-197,079.60-79,149.12

Finding the Fourth Proportional to 142,810.08, 197,079.60 and 79,149.12

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Solution

The fourth proportional to 142,810.08, 197,079.60 and 79,149.12 is: 109,226.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,810.08 : 197,079.60 = 79,149.12 : x
  2. Step 2: Convert to fraction form
    142,810.08/197,079.60 = 79,149.12/x
  3. Step 3: Cross multiply
    142,810.08x = 197,079.60 × 79,149.12
  4. Step 4: Simplify right side
    142,810.08x = 15,598,676,909.95
  5. Step 5: Solve for x
    x = 15,598,676,909.95/142,810.08
  6. Step 6: Final answer
    x = 109,226.72

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1.5x scale

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.