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Finding the Fourth Proportional to 107,321.20, 160,981.80 and 67,404.40

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Solution

The fourth proportional to 107,321.20, 160,981.80 and 67,404.40 is: 101,106.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,321.20 : 160,981.80 = 67,404.40 : x
  2. Step 2: Convert to fraction form
    107,321.20/160,981.80 = 67,404.40/x
  3. Step 3: Cross multiply
    107,321.20x = 160,981.80 × 67,404.40
  4. Step 4: Simplify right side
    107,321.20x = 10,850,881,639.92
  5. Step 5: Solve for x
    x = 10,850,881,639.92/107,321.20
  6. Step 6: Final answer
    x = 101,106.60

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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.