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Finding the Fourth Proportional to 124,069.20, 186,103.80 and 90,632.40

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Solution

The fourth proportional to 124,069.20, 186,103.80 and 90,632.40 is: 135,948.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,069.20 : 186,103.80 = 90,632.40 : x
  2. Step 2: Convert to fraction form
    124,069.20/186,103.80 = 90,632.40/x
  3. Step 3: Cross multiply
    124,069.20x = 186,103.80 × 90,632.40
  4. Step 4: Simplify right side
    124,069.20x = 16,867,034,043.12
  5. Step 5: Solve for x
    x = 16,867,034,043.12/124,069.20
  6. Step 6: Final answer
    x = 135,948.60

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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.