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Finding the Fourth Proportional to 145,810.40, 218,764.20 and 130,132.40

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Solution

The fourth proportional to 145,810.40, 218,764.20 and 130,132.40 is: 195,241.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,810.40 : 218,764.20 = 130,132.40 : x
  2. Step 2: Convert to fraction form
    145,810.40/218,764.20 = 130,132.40/x
  3. Step 3: Cross multiply
    145,810.40x = 218,764.20 × 130,132.40
  4. Step 4: Simplify right side
    145,810.40x = 28,468,310,380.08
  5. Step 5: Solve for x
    x = 28,468,310,380.08/145,810.40
  6. Step 6: Final answer
    x = 195,241.97

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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.