Home / 142,320.90-213,516.38-100,283.08

Finding the Fourth Proportional to 142,320.90, 213,516.38 and 100,283.08

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Solution

The fourth proportional to 142,320.90, 213,516.38 and 100,283.08 is: 150,449.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,320.90 : 213,516.38 = 100,283.08 : x
  2. Step 2: Convert to fraction form
    142,320.90/213,516.38 = 100,283.08/x
  3. Step 3: Cross multiply
    142,320.90x = 213,516.38 × 100,283.08
  4. Step 4: Simplify right side
    142,320.90x = 21,412,079,181.64
  5. Step 5: Solve for x
    x = 21,412,079,181.64/142,320.90
  6. Step 6: Final answer
    x = 150,449.30

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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.