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Finding the Fourth Proportional to 145,343.40, 218,022.30 and 75,359.40

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Solution

The fourth proportional to 145,343.40, 218,022.30 and 75,359.40 is: 113,042.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,343.40 : 218,022.30 = 75,359.40 : x
  2. Step 2: Convert to fraction form
    145,343.40/218,022.30 = 75,359.40/x
  3. Step 3: Cross multiply
    145,343.40x = 218,022.30 × 75,359.40
  4. Step 4: Simplify right side
    145,343.40x = 16,430,029,714.62
  5. Step 5: Solve for x
    x = 16,430,029,714.62/145,343.40
  6. Step 6: Final answer
    x = 113,042.83

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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.