Home / 142,280.52-212,124-138,645.24

Finding the Fourth Proportional to 142,280.52, 212,124 and 138,645.24

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Solution

The fourth proportional to 142,280.52, 212,124 and 138,645.24 is: 206,704.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,280.52 : 212,124 = 138,645.24 : x
  2. Step 2: Convert to fraction form
    142,280.52/212,124 = 138,645.24/x
  3. Step 3: Cross multiply
    142,280.52x = 212,124 × 138,645.24
  4. Step 4: Simplify right side
    142,280.52x = 29,409,982,889.76
  5. Step 5: Solve for x
    x = 29,409,982,889.76/142,280.52
  6. Step 6: Final answer
    x = 206,704.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.