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Finding the Fourth Proportional to 100,809.70, 151,214.55 and 48,321.70

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Solution

The fourth proportional to 100,809.70, 151,214.55 and 48,321.70 is: 72,482.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,809.70 : 151,214.55 = 48,321.70 : x
  2. Step 2: Convert to fraction form
    100,809.70/151,214.55 = 48,321.70/x
  3. Step 3: Cross multiply
    100,809.70x = 151,214.55 × 48,321.70
  4. Step 4: Simplify right side
    100,809.70x = 7,306,944,120.74
  5. Step 5: Solve for x
    x = 7,306,944,120.74/100,809.70
  6. Step 6: Final answer
    x = 72,482.55

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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.