Home / 142,737.96-196,990.38-79,081.68

Finding the Fourth Proportional to 142,737.96, 196,990.38 and 79,081.68

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Solution

The fourth proportional to 142,737.96, 196,990.38 and 79,081.68 is: 109,139.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,737.96 : 196,990.38 = 79,081.68 : x
  2. Step 2: Convert to fraction form
    142,737.96/196,990.38 = 79,081.68/x
  3. Step 3: Cross multiply
    142,737.96x = 196,990.38 × 79,081.68
  4. Step 4: Simplify right side
    142,737.96x = 15,578,330,194.24
  5. Step 5: Solve for x
    x = 15,578,330,194.24/142,737.96
  6. Step 6: Final answer
    x = 109,139.36

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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.