Home / 103,691.48-155,531.74-51,083.20

Finding the Fourth Proportional to 103,691.48, 155,531.74 and 51,083.20

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Solution

The fourth proportional to 103,691.48, 155,531.74 and 51,083.20 is: 76,622.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,691.48 : 155,531.74 = 51,083.20 : x
  2. Step 2: Convert to fraction form
    103,691.48/155,531.74 = 51,083.20/x
  3. Step 3: Cross multiply
    103,691.48x = 155,531.74 × 51,083.20
  4. Step 4: Simplify right side
    103,691.48x = 7,945,058,980.77
  5. Step 5: Solve for x
    x = 7,945,058,980.77/103,691.48
  6. Step 6: Final answer
    x = 76,622.10

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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.