Home / 99,950.20-137,917.95-64,188.66

Finding the Fourth Proportional to 99,950.20, 137,917.95 and 64,188.66

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Solution

The fourth proportional to 99,950.20, 137,917.95 and 64,188.66 is: 88,571.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,950.20 : 137,917.95 = 64,188.66 : x
  2. Step 2: Convert to fraction form
    99,950.20/137,917.95 = 64,188.66/x
  3. Step 3: Cross multiply
    99,950.20x = 137,917.95 × 64,188.66
  4. Step 4: Simplify right side
    99,950.20x = 8,852,768,400.45
  5. Step 5: Solve for x
    x = 8,852,768,400.45/99,950.20
  6. Step 6: Final answer
    x = 88,571.79

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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.