Home / 100,010.42-137,949.35-64,143.62

Finding the Fourth Proportional to 100,010.42, 137,949.35 and 64,143.62

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Solution

The fourth proportional to 100,010.42, 137,949.35 and 64,143.62 is: 88,476.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,010.42 : 137,949.35 = 64,143.62 : x
  2. Step 2: Convert to fraction form
    100,010.42/137,949.35 = 64,143.62/x
  3. Step 3: Cross multiply
    100,010.42x = 137,949.35 × 64,143.62
  4. Step 4: Simplify right side
    100,010.42x = 8,848,571,190.88
  5. Step 5: Solve for x
    x = 8,848,571,190.88/100,010.42
  6. Step 6: Final answer
    x = 88,476.49

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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.