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Finding the Fourth Proportional to 136,475.40, 204,713.10 and 77,426.40

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Solution

The fourth proportional to 136,475.40, 204,713.10 and 77,426.40 is: 116,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,475.40 : 204,713.10 = 77,426.40 : x
  2. Step 2: Convert to fraction form
    136,475.40/204,713.10 = 77,426.40/x
  3. Step 3: Cross multiply
    136,475.40x = 204,713.10 × 77,426.40
  4. Step 4: Simplify right side
    136,475.40x = 15,850,198,365.84
  5. Step 5: Solve for x
    x = 15,850,198,365.84/136,475.40
  6. Step 6: Final answer
    x = 116,139.60

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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.