Home / 99,951.20-137,919.33-64,189.66

Finding the Fourth Proportional to 99,951.20, 137,919.33 and 64,189.66

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Solution

The fourth proportional to 99,951.20, 137,919.33 and 64,189.66 is: 88,573.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,951.20 : 137,919.33 = 64,189.66 : x
  2. Step 2: Convert to fraction form
    99,951.20/137,919.33 = 64,189.66/x
  3. Step 3: Cross multiply
    99,951.20x = 137,919.33 × 64,189.66
  4. Step 4: Simplify right side
    99,951.20x = 8,852,994,900.13
  5. Step 5: Solve for x
    x = 8,852,994,900.13/99,951.20
  6. Step 6: Final answer
    x = 88,573.17

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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.