Home / 142,989.76-197,326.11-79,327.57

Finding the Fourth Proportional to 142,989.76, 197,326.11 and 79,327.57

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Solution

The fourth proportional to 142,989.76, 197,326.11 and 79,327.57 is: 109,472.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,989.76 : 197,326.11 = 79,327.57 : x
  2. Step 2: Convert to fraction form
    142,989.76/197,326.11 = 79,327.57/x
  3. Step 3: Cross multiply
    142,989.76x = 197,326.11 × 79,327.57
  4. Step 4: Simplify right side
    142,989.76x = 15,653,400,803.85
  5. Step 5: Solve for x
    x = 15,653,400,803.85/142,989.76
  6. Step 6: Final answer
    x = 109,472.18

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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.