Home / 138,229.14-190,756.56-77,800.68

Finding the Fourth Proportional to 138,229.14, 190,756.56 and 77,800.68

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Solution

The fourth proportional to 138,229.14, 190,756.56 and 77,800.68 is: 107,365.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,229.14 : 190,756.56 = 77,800.68 : x
  2. Step 2: Convert to fraction form
    138,229.14/190,756.56 = 77,800.68/x
  3. Step 3: Cross multiply
    138,229.14x = 190,756.56 × 77,800.68
  4. Step 4: Simplify right side
    138,229.14x = 14,840,990,082.46
  5. Step 5: Solve for x
    x = 14,840,990,082.46/138,229.14
  6. Step 6: Final answer
    x = 107,365.13

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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.