Home / 98,933.60-136,548.99-90,963.20

Finding the Fourth Proportional to 98,933.60, 136,548.99 and 90,963.20

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Solution

The fourth proportional to 98,933.60, 136,548.99 and 90,963.20 is: 125,548.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,933.60 : 136,548.99 = 90,963.20 : x
  2. Step 2: Convert to fraction form
    98,933.60/136,548.99 = 90,963.20/x
  3. Step 3: Cross multiply
    98,933.60x = 136,548.99 × 90,963.20
  4. Step 4: Simplify right side
    98,933.60x = 12,420,932,404.42
  5. Step 5: Solve for x
    x = 12,420,932,404.42/98,933.60
  6. Step 6: Final answer
    x = 125,548.18

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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.