Home / 99,844.80-149,767.20-90,628.80

Finding the Fourth Proportional to 99,844.80, 149,767.20 and 90,628.80

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Solution

The fourth proportional to 99,844.80, 149,767.20 and 90,628.80 is: 135,943.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,844.80 : 149,767.20 = 90,628.80 : x
  2. Step 2: Convert to fraction form
    99,844.80/149,767.20 = 90,628.80/x
  3. Step 3: Cross multiply
    99,844.80x = 149,767.20 × 90,628.80
  4. Step 4: Simplify right side
    99,844.80x = 13,573,221,615.36
  5. Step 5: Solve for x
    x = 13,573,221,615.36/99,844.80
  6. Step 6: Final answer
    x = 135,943.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.