Home / 142,979.46-197,335.22-79,337.76

Finding the Fourth Proportional to 142,979.46, 197,335.22 and 79,337.76

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Solution

The fourth proportional to 142,979.46, 197,335.22 and 79,337.76 is: 109,499.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,979.46 : 197,335.22 = 79,337.76 : x
  2. Step 2: Convert to fraction form
    142,979.46/197,335.22 = 79,337.76/x
  3. Step 3: Cross multiply
    142,979.46x = 197,335.22 × 79,337.76
  4. Step 4: Simplify right side
    142,979.46x = 15,656,133,927.22
  5. Step 5: Solve for x
    x = 15,656,133,927.22/142,979.46
  6. Step 6: Final answer
    x = 109,499.18

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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.