Home / 100,176.30-138,253.68-59,364.78

Finding the Fourth Proportional to 100,176.30, 138,253.68 and 59,364.78

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Solution

The fourth proportional to 100,176.30, 138,253.68 and 59,364.78 is: 81,929.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,176.30 : 138,253.68 = 59,364.78 : x
  2. Step 2: Convert to fraction form
    100,176.30/138,253.68 = 59,364.78/x
  3. Step 3: Cross multiply
    100,176.30x = 138,253.68 × 59,364.78
  4. Step 4: Simplify right side
    100,176.30x = 8,207,399,297.39
  5. Step 5: Solve for x
    x = 8,207,399,297.39/100,176.30
  6. Step 6: Final answer
    x = 81,929.55

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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.