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Finding the Fourth Proportional to 154,300.80, 231,305.40 and 91,169.40

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Solution

The fourth proportional to 154,300.80, 231,305.40 and 91,169.40 is: 136,667.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,300.80 : 231,305.40 = 91,169.40 : x
  2. Step 2: Convert to fraction form
    154,300.80/231,305.40 = 91,169.40/x
  3. Step 3: Cross multiply
    154,300.80x = 231,305.40 × 91,169.40
  4. Step 4: Simplify right side
    154,300.80x = 21,087,974,534.76
  5. Step 5: Solve for x
    x = 21,087,974,534.76/154,300.80
  6. Step 6: Final answer
    x = 136,667.95

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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.