Home / 142,817.06-212,948.76-138,893.54

Finding the Fourth Proportional to 142,817.06, 212,948.76 and 138,893.54

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Solution

The fourth proportional to 142,817.06, 212,948.76 and 138,893.54 is: 207,098.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,817.06 : 212,948.76 = 138,893.54 : x
  2. Step 2: Convert to fraction form
    142,817.06/212,948.76 = 138,893.54/x
  3. Step 3: Cross multiply
    142,817.06x = 212,948.76 × 138,893.54
  4. Step 4: Simplify right side
    142,817.06x = 29,577,207,115.01
  5. Step 5: Solve for x
    x = 29,577,207,115.01/142,817.06
  6. Step 6: Final answer
    x = 207,098.56

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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.