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Finding the Fourth Proportional to 100,957.50, 151,479.98 and 54,155.70

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Solution

The fourth proportional to 100,957.50, 151,479.98 and 54,155.70 is: 81,257.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,957.50 : 151,479.98 = 54,155.70 : x
  2. Step 2: Convert to fraction form
    100,957.50/151,479.98 = 54,155.70/x
  3. Step 3: Cross multiply
    100,957.50x = 151,479.98 × 54,155.70
  4. Step 4: Simplify right side
    100,957.50x = 8,203,504,352.89
  5. Step 5: Solve for x
    x = 8,203,504,352.89/100,957.50
  6. Step 6: Final answer
    x = 81,257.01

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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.