Home / 145,094.20-217,814.10-81,964.60

Finding the Fourth Proportional to 145,094.20, 217,814.10 and 81,964.60

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Solution

The fourth proportional to 145,094.20, 217,814.10 and 81,964.60 is: 123,044.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,094.20 : 217,814.10 = 81,964.60 : x
  2. Step 2: Convert to fraction form
    145,094.20/217,814.10 = 81,964.60/x
  3. Step 3: Cross multiply
    145,094.20x = 217,814.10 × 81,964.60
  4. Step 4: Simplify right side
    145,094.20x = 17,853,045,580.86
  5. Step 5: Solve for x
    x = 17,853,045,580.86/145,094.20
  6. Step 6: Final answer
    x = 123,044.52

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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.