Home / 142,030.62-196,006.33-78,372.52

Finding the Fourth Proportional to 142,030.62, 196,006.33 and 78,372.52

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Solution

The fourth proportional to 142,030.62, 196,006.33 and 78,372.52 is: 108,156.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,030.62 : 196,006.33 = 78,372.52 : x
  2. Step 2: Convert to fraction form
    142,030.62/196,006.33 = 78,372.52/x
  3. Step 3: Cross multiply
    142,030.62x = 196,006.33 × 78,372.52
  4. Step 4: Simplify right side
    142,030.62x = 15,361,510,018.05
  5. Step 5: Solve for x
    x = 15,361,510,018.05/142,030.62
  6. Step 6: Final answer
    x = 108,156.33

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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.