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Finding the Fourth Proportional to 124,657.80, 186,921.08 and 85,226.19

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Solution

The fourth proportional to 124,657.80, 186,921.08 and 85,226.19 is: 127,794.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,657.80 : 186,921.08 = 85,226.19 : x
  2. Step 2: Convert to fraction form
    124,657.80/186,921.08 = 85,226.19/x
  3. Step 3: Cross multiply
    124,657.80x = 186,921.08 × 85,226.19
  4. Step 4: Simplify right side
    124,657.80x = 15,930,570,671.60
  5. Step 5: Solve for x
    x = 15,930,570,671.60/124,657.80
  6. Step 6: Final answer
    x = 127,794.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.