Home / 142,343.52-196,426.38-78,677.52

Finding the Fourth Proportional to 142,343.52, 196,426.38 and 78,677.52

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Solution

The fourth proportional to 142,343.52, 196,426.38 and 78,677.52 is: 108,570.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,343.52 : 196,426.38 = 78,677.52 : x
  2. Step 2: Convert to fraction form
    142,343.52/196,426.38 = 78,677.52/x
  3. Step 3: Cross multiply
    142,343.52x = 196,426.38 × 78,677.52
  4. Step 4: Simplify right side
    142,343.52x = 15,454,340,440.98
  5. Step 5: Solve for x
    x = 15,454,340,440.98/142,343.52
  6. Step 6: Final answer
    x = 108,570.73

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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.