Home / 149,619.72-206,331.18-100,671.63

Finding the Fourth Proportional to 149,619.72, 206,331.18 and 100,671.63

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Solution

The fourth proportional to 149,619.72, 206,331.18 and 100,671.63 is: 138,829.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,619.72 : 206,331.18 = 100,671.63 : x
  2. Step 2: Convert to fraction form
    149,619.72/206,331.18 = 100,671.63/x
  3. Step 3: Cross multiply
    149,619.72x = 206,331.18 × 100,671.63
  4. Step 4: Simplify right side
    149,619.72x = 20,771,696,210.42
  5. Step 5: Solve for x
    x = 20,771,696,210.42/149,619.72
  6. Step 6: Final answer
    x = 138,829.94

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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.