Home / 107,966.36-149,176.32-77,691.80

Finding the Fourth Proportional to 107,966.36, 149,176.32 and 77,691.80

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Solution

The fourth proportional to 107,966.36, 149,176.32 and 77,691.80 is: 107,346.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,966.36 : 149,176.32 = 77,691.80 : x
  2. Step 2: Convert to fraction form
    107,966.36/149,176.32 = 77,691.80/x
  3. Step 3: Cross multiply
    107,966.36x = 149,176.32 × 77,691.80
  4. Step 4: Simplify right side
    107,966.36x = 11,589,776,818.18
  5. Step 5: Solve for x
    x = 11,589,776,818.18/107,966.36
  6. Step 6: Final answer
    x = 107,346.18

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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.