Home / 143,081.64-197,456.13-79,425.36

Finding the Fourth Proportional to 143,081.64, 197,456.13 and 79,425.36

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Solution

The fourth proportional to 143,081.64, 197,456.13 and 79,425.36 is: 109,608.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,081.64 : 197,456.13 = 79,425.36 : x
  2. Step 2: Convert to fraction form
    143,081.64/197,456.13 = 79,425.36/x
  3. Step 3: Cross multiply
    143,081.64x = 197,456.13 × 79,425.36
  4. Step 4: Simplify right side
    143,081.64x = 15,683,024,209.46
  5. Step 5: Solve for x
    x = 15,683,024,209.46/143,081.64
  6. Step 6: Final answer
    x = 109,608.92

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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.