Home / 142,167.09-195,956.67-100,787.83

Finding the Fourth Proportional to 142,167.09, 195,956.67 and 100,787.83

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Solution

The fourth proportional to 142,167.09, 195,956.67 and 100,787.83 is: 138,921.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,167.09 : 195,956.67 = 100,787.83 : x
  2. Step 2: Convert to fraction form
    142,167.09/195,956.67 = 100,787.83/x
  3. Step 3: Cross multiply
    142,167.09x = 195,956.67 × 100,787.83
  4. Step 4: Simplify right side
    142,167.09x = 19,750,047,543.33
  5. Step 5: Solve for x
    x = 19,750,047,543.33/142,167.09
  6. Step 6: Final answer
    x = 138,921.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.