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Finding the Fourth Proportional to 145,940.20, 218,740.20 and 67,062.40

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Solution

The fourth proportional to 145,940.20, 218,740.20 and 67,062.40 is: 100,515.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,940.20 : 218,740.20 = 67,062.40 : x
  2. Step 2: Convert to fraction form
    145,940.20/218,740.20 = 67,062.40/x
  3. Step 3: Cross multiply
    145,940.20x = 218,740.20 × 67,062.40
  4. Step 4: Simplify right side
    145,940.20x = 14,669,242,788.48
  5. Step 5: Solve for x
    x = 14,669,242,788.48/145,940.20
  6. Step 6: Final answer
    x = 100,515.44

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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.