Home / 149,172.28-205,885.38-85,510.60

Finding the Fourth Proportional to 149,172.28, 205,885.38 and 85,510.60

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Solution

The fourth proportional to 149,172.28, 205,885.38 and 85,510.60 is: 118,020.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,172.28 : 205,885.38 = 85,510.60 : x
  2. Step 2: Convert to fraction form
    149,172.28/205,885.38 = 85,510.60/x
  3. Step 3: Cross multiply
    149,172.28x = 205,885.38 × 85,510.60
  4. Step 4: Simplify right side
    149,172.28x = 17,605,382,375.03
  5. Step 5: Solve for x
    x = 17,605,382,375.03/149,172.28
  6. Step 6: Final answer
    x = 118,020.47

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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.