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Finding the Fourth Proportional to 96,228.45, 144,069.30 and 90,991.80

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Solution

The fourth proportional to 96,228.45, 144,069.30 and 90,991.80 is: 136,229.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,228.45 : 144,069.30 = 90,991.80 : x
  2. Step 2: Convert to fraction form
    96,228.45/144,069.30 = 90,991.80/x
  3. Step 3: Cross multiply
    96,228.45x = 144,069.30 × 90,991.80
  4. Step 4: Simplify right side
    96,228.45x = 13,109,124,931.74
  5. Step 5: Solve for x
    x = 13,109,124,931.74/96,228.45
  6. Step 6: Final answer
    x = 136,229.20

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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.