Home / 142,217.11-196,257.62-77,685.57

Finding the Fourth Proportional to 142,217.11, 196,257.62 and 77,685.57

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Solution

The fourth proportional to 142,217.11, 196,257.62 and 77,685.57 is: 107,205.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,217.11 : 196,257.62 = 77,685.57 : x
  2. Step 2: Convert to fraction form
    142,217.11/196,257.62 = 77,685.57/x
  3. Step 3: Cross multiply
    142,217.11x = 196,257.62 × 77,685.57
  4. Step 4: Simplify right side
    142,217.11x = 15,246,384,688.12
  5. Step 5: Solve for x
    x = 15,246,384,688.12/142,217.11
  6. Step 6: Final answer
    x = 107,205.00

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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.