Home / 142,344.98-196,436.12-78,682.76

Finding the Fourth Proportional to 142,344.98, 196,436.12 and 78,682.76

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Solution

The fourth proportional to 142,344.98, 196,436.12 and 78,682.76 is: 108,582.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,344.98 : 196,436.12 = 78,682.76 : x
  2. Step 2: Convert to fraction form
    142,344.98/196,436.12 = 78,682.76/x
  3. Step 3: Cross multiply
    142,344.98x = 196,436.12 × 78,682.76
  4. Step 4: Simplify right side
    142,344.98x = 15,456,134,709.70
  5. Step 5: Solve for x
    x = 15,456,134,709.70/142,344.98
  6. Step 6: Final answer
    x = 108,582.23

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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.