Home / 100,433.32-138,599.46-55,115.80

Finding the Fourth Proportional to 100,433.32, 138,599.46 and 55,115.80

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Solution

The fourth proportional to 100,433.32, 138,599.46 and 55,115.80 is: 76,060.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,433.32 : 138,599.46 = 55,115.80 : x
  2. Step 2: Convert to fraction form
    100,433.32/138,599.46 = 55,115.80/x
  3. Step 3: Cross multiply
    100,433.32x = 138,599.46 × 55,115.80
  4. Step 4: Simplify right side
    100,433.32x = 7,639,020,117.47
  5. Step 5: Solve for x
    x = 7,639,020,117.47/100,433.32
  6. Step 6: Final answer
    x = 76,060.62

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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.