Home / 103,202.10-155,153.07-82,407.78

Finding the Fourth Proportional to 103,202.10, 155,153.07 and 82,407.78

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Solution

The fourth proportional to 103,202.10, 155,153.07 and 82,407.78 is: 123,891.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,202.10 : 155,153.07 = 82,407.78 : x
  2. Step 2: Convert to fraction form
    103,202.10/155,153.07 = 82,407.78/x
  3. Step 3: Cross multiply
    103,202.10x = 155,153.07 × 82,407.78
  4. Step 4: Simplify right side
    103,202.10x = 12,785,820,058.88
  5. Step 5: Solve for x
    x = 12,785,820,058.88/103,202.10
  6. Step 6: Final answer
    x = 123,891.08

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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.