Home / 142,001.40-212,921.10-53,257.80

Finding the Fourth Proportional to 142,001.40, 212,921.10 and 53,257.80

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Solution

The fourth proportional to 142,001.40, 212,921.10 and 53,257.80 is: 79,856.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,001.40 : 212,921.10 = 53,257.80 : x
  2. Step 2: Convert to fraction form
    142,001.40/212,921.10 = 53,257.80/x
  3. Step 3: Cross multiply
    142,001.40x = 212,921.10 × 53,257.80
  4. Step 4: Simplify right side
    142,001.40x = 11,339,709,359.58
  5. Step 5: Solve for x
    x = 11,339,709,359.58/142,001.40
  6. Step 6: Final answer
    x = 79,856.32

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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.