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Finding the Fourth Proportional to 122,275.20, 168,741.50 and 73,870.40

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Solution

The fourth proportional to 122,275.20, 168,741.50 and 73,870.40 is: 101,942.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,275.20 : 168,741.50 = 73,870.40 : x
  2. Step 2: Convert to fraction form
    122,275.20/168,741.50 = 73,870.40/x
  3. Step 3: Cross multiply
    122,275.20x = 168,741.50 × 73,870.40
  4. Step 4: Simplify right side
    122,275.20x = 12,465,002,101.60
  5. Step 5: Solve for x
    x = 12,465,002,101.60/122,275.20
  6. Step 6: Final answer
    x = 101,942.19

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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.