Home / 145,213.10-217,528.05-82,810.70

Finding the Fourth Proportional to 145,213.10, 217,528.05 and 82,810.70

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Solution

The fourth proportional to 145,213.10, 217,528.05 and 82,810.70 is: 124,049.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,213.10 : 217,528.05 = 82,810.70 : x
  2. Step 2: Convert to fraction form
    145,213.10/217,528.05 = 82,810.70/x
  3. Step 3: Cross multiply
    145,213.10x = 217,528.05 × 82,810.70
  4. Step 4: Simplify right side
    145,213.10x = 18,013,650,090.14
  5. Step 5: Solve for x
    x = 18,013,650,090.14/145,213.10
  6. Step 6: Final answer
    x = 124,049.76

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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.