Home / 142,886.92-197,186.34-79,227.40

Finding the Fourth Proportional to 142,886.92, 197,186.34 and 79,227.40

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Solution

The fourth proportional to 142,886.92, 197,186.34 and 79,227.40 is: 109,335.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,886.92 : 197,186.34 = 79,227.40 : x
  2. Step 2: Convert to fraction form
    142,886.92/197,186.34 = 79,227.40/x
  3. Step 3: Cross multiply
    142,886.92x = 197,186.34 × 79,227.40
  4. Step 4: Simplify right side
    142,886.92x = 15,622,561,033.72
  5. Step 5: Solve for x
    x = 15,622,561,033.72/142,886.92
  6. Step 6: Final answer
    x = 109,335.14

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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.