Home / 100,566.18-138,845.79-89,792.46

Finding the Fourth Proportional to 100,566.18, 138,845.79 and 89,792.46

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Solution

The fourth proportional to 100,566.18, 138,845.79 and 89,792.46 is: 123,971.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,566.18 : 138,845.79 = 89,792.46 : x
  2. Step 2: Convert to fraction form
    100,566.18/138,845.79 = 89,792.46/x
  3. Step 3: Cross multiply
    100,566.18x = 138,845.79 × 89,792.46
  4. Step 4: Simplify right side
    100,566.18x = 12,467,305,044.74
  5. Step 5: Solve for x
    x = 12,467,305,044.74/100,566.18
  6. Step 6: Final answer
    x = 123,971.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.