Home / 143,544.97-215,172.71-90,275.01

Finding the Fourth Proportional to 143,544.97, 215,172.71 and 90,275.01

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Solution

The fourth proportional to 143,544.97, 215,172.71 and 90,275.01 is: 135,321.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,544.97 : 215,172.71 = 90,275.01 : x
  2. Step 2: Convert to fraction form
    143,544.97/215,172.71 = 90,275.01/x
  3. Step 3: Cross multiply
    143,544.97x = 215,172.71 × 90,275.01
  4. Step 4: Simplify right side
    143,544.97x = 19,424,717,627.24
  5. Step 5: Solve for x
    x = 19,424,717,627.24/143,544.97
  6. Step 6: Final answer
    x = 135,321.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.