Home / 131,964.52-197,916.38-78,671.52

Finding the Fourth Proportional to 131,964.52, 197,916.38 and 78,671.52

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Solution

The fourth proportional to 131,964.52, 197,916.38 and 78,671.52 is: 117,989.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,964.52 : 197,916.38 = 78,671.52 : x
  2. Step 2: Convert to fraction form
    131,964.52/197,916.38 = 78,671.52/x
  3. Step 3: Cross multiply
    131,964.52x = 197,916.38 × 78,671.52
  4. Step 4: Simplify right side
    131,964.52x = 15,570,382,447.50
  5. Step 5: Solve for x
    x = 15,570,382,447.50/131,964.52
  6. Step 6: Final answer
    x = 117,989.16

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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.