Home / 149,016.16-205,638.20-81,948.16

Finding the Fourth Proportional to 149,016.16, 205,638.20 and 81,948.16

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Solution

The fourth proportional to 149,016.16, 205,638.20 and 81,948.16 is: 113,086.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,016.16 : 205,638.20 = 81,948.16 : x
  2. Step 2: Convert to fraction form
    149,016.16/205,638.20 = 81,948.16/x
  3. Step 3: Cross multiply
    149,016.16x = 205,638.20 × 81,948.16
  4. Step 4: Simplify right side
    149,016.16x = 16,851,672,115.71
  5. Step 5: Solve for x
    x = 16,851,672,115.71/149,016.16
  6. Step 6: Final answer
    x = 113,086.21

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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.