Home / 115,108.73-158,874.56-77,361.11

Finding the Fourth Proportional to 115,108.73, 158,874.56 and 77,361.11

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Solution

The fourth proportional to 115,108.73, 158,874.56 and 77,361.11 is: 106,774.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,108.73 : 158,874.56 = 77,361.11 : x
  2. Step 2: Convert to fraction form
    115,108.73/158,874.56 = 77,361.11/x
  3. Step 3: Cross multiply
    115,108.73x = 158,874.56 × 77,361.11
  4. Step 4: Simplify right side
    115,108.73x = 12,290,711,131.18
  5. Step 5: Solve for x
    x = 12,290,711,131.18/115,108.73
  6. Step 6: Final answer
    x = 106,774.80

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1.5x scale

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.