Home / 100,884.96-139,229.28-58,444.20

Finding the Fourth Proportional to 100,884.96, 139,229.28 and 58,444.20

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Solution

The fourth proportional to 100,884.96, 139,229.28 and 58,444.20 is: 80,657.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,884.96 : 139,229.28 = 58,444.20 : x
  2. Step 2: Convert to fraction form
    100,884.96/139,229.28 = 58,444.20/x
  3. Step 3: Cross multiply
    100,884.96x = 139,229.28 × 58,444.20
  4. Step 4: Simplify right side
    100,884.96x = 8,137,143,886.18
  5. Step 5: Solve for x
    x = 8,137,143,886.18/100,884.96
  6. Step 6: Final answer
    x = 80,657.65

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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.