Home / 142,818.02-197,091.33-78,282.96

Finding the Fourth Proportional to 142,818.02, 197,091.33 and 78,282.96

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Solution

The fourth proportional to 142,818.02, 197,091.33 and 78,282.96 is: 108,031.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,818.02 : 197,091.33 = 78,282.96 : x
  2. Step 2: Convert to fraction form
    142,818.02/197,091.33 = 78,282.96/x
  3. Step 3: Cross multiply
    142,818.02x = 197,091.33 × 78,282.96
  4. Step 4: Simplify right side
    142,818.02x = 15,428,891,670.08
  5. Step 5: Solve for x
    x = 15,428,891,670.08/142,818.02
  6. Step 6: Final answer
    x = 108,031.83

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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.