Home / 115,220.79-158,914.55-74,947.41

Finding the Fourth Proportional to 115,220.79, 158,914.55 and 74,947.41

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Solution

The fourth proportional to 115,220.79, 158,914.55 and 74,947.41 is: 103,368.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,220.79 : 158,914.55 = 74,947.41 : x
  2. Step 2: Convert to fraction form
    115,220.79/158,914.55 = 74,947.41/x
  3. Step 3: Cross multiply
    115,220.79x = 158,914.55 × 74,947.41
  4. Step 4: Simplify right side
    115,220.79x = 11,910,234,121.18
  5. Step 5: Solve for x
    x = 11,910,234,121.18/115,220.79
  6. Step 6: Final answer
    x = 103,368.79

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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.