Home / 99,113.35-136,705.76-90,963.20

Finding the Fourth Proportional to 99,113.35, 136,705.76 and 90,963.20

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Solution

The fourth proportional to 99,113.35, 136,705.76 and 90,963.20 is: 125,464.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,113.35 : 136,705.76 = 90,963.20 : x
  2. Step 2: Convert to fraction form
    99,113.35/136,705.76 = 90,963.20/x
  3. Step 3: Cross multiply
    99,113.35x = 136,705.76 × 90,963.20
  4. Step 4: Simplify right side
    99,113.35x = 12,435,192,249.69
  5. Step 5: Solve for x
    x = 12,435,192,249.69/99,113.35
  6. Step 6: Final answer
    x = 125,464.36

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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.