Home / 99,549.36-137,512.50-79,546.56

Finding the Fourth Proportional to 99,549.36, 137,512.50 and 79,546.56

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Solution

The fourth proportional to 99,549.36, 137,512.50 and 79,546.56 is: 109,881.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,549.36 : 137,512.50 = 79,546.56 : x
  2. Step 2: Convert to fraction form
    99,549.36/137,512.50 = 79,546.56/x
  3. Step 3: Cross multiply
    99,549.36x = 137,512.50 × 79,546.56
  4. Step 4: Simplify right side
    99,549.36x = 10,938,646,332
  5. Step 5: Solve for x
    x = 10,938,646,332/99,549.36
  6. Step 6: Final answer
    x = 109,881.63

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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.