Home / 100,084.41-138,166.46-57,634.74

Finding the Fourth Proportional to 100,084.41, 138,166.46 and 57,634.74

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Solution

The fourth proportional to 100,084.41, 138,166.46 and 57,634.74 is: 79,564.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,084.41 : 138,166.46 = 57,634.74 : x
  2. Step 2: Convert to fraction form
    100,084.41/138,166.46 = 57,634.74/x
  3. Step 3: Cross multiply
    100,084.41x = 138,166.46 × 57,634.74
  4. Step 4: Simplify right side
    100,084.41x = 7,963,187,926.78
  5. Step 5: Solve for x
    x = 7,963,187,926.78/100,084.41
  6. Step 6: Final answer
    x = 79,564.72

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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.