Home / 149,012.28-205,638.42-85,348.74

Finding the Fourth Proportional to 149,012.28, 205,638.42 and 85,348.74

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Solution

The fourth proportional to 149,012.28, 205,638.42 and 85,348.74 is: 117,782.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,012.28 : 205,638.42 = 85,348.74 : x
  2. Step 2: Convert to fraction form
    149,012.28/205,638.42 = 85,348.74/x
  3. Step 3: Cross multiply
    149,012.28x = 205,638.42 × 85,348.74
  4. Step 4: Simplify right side
    149,012.28x = 17,550,980,042.59
  5. Step 5: Solve for x
    x = 17,550,980,042.59/149,012.28
  6. Step 6: Final answer
    x = 117,782.11

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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.