Home / 142,050.68-213,020.64-53,255.78

Finding the Fourth Proportional to 142,050.68, 213,020.64 and 53,255.78

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Solution

The fourth proportional to 142,050.68, 213,020.64 and 53,255.78 is: 79,862.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,050.68 : 213,020.64 = 53,255.78 : x
  2. Step 2: Convert to fraction form
    142,050.68/213,020.64 = 53,255.78/x
  3. Step 3: Cross multiply
    142,050.68x = 213,020.64 × 53,255.78
  4. Step 4: Simplify right side
    142,050.68x = 11,344,580,339.30
  5. Step 5: Solve for x
    x = 11,344,580,339.30/142,050.68
  6. Step 6: Final answer
    x = 79,862.91

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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.