Home / 157,736.85-217,643.61-100,355.46

Finding the Fourth Proportional to 157,736.85, 217,643.61 and 100,355.46

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Solution

The fourth proportional to 157,736.85, 217,643.61 and 100,355.46 is: 138,469.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,736.85 : 217,643.61 = 100,355.46 : x
  2. Step 2: Convert to fraction form
    157,736.85/217,643.61 = 100,355.46/x
  3. Step 3: Cross multiply
    157,736.85x = 217,643.61 × 100,355.46
  4. Step 4: Simplify right side
    157,736.85x = 21,841,724,597.61
  5. Step 5: Solve for x
    x = 21,841,724,597.61/157,736.85
  6. Step 6: Final answer
    x = 138,469.38

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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.