Home / 131,865.94-181,974.40-71,436.40

Finding the Fourth Proportional to 131,865.94, 181,974.40 and 71,436.40

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Solution

The fourth proportional to 131,865.94, 181,974.40 and 71,436.40 is: 98,581.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,865.94 : 181,974.40 = 71,436.40 : x
  2. Step 2: Convert to fraction form
    131,865.94/181,974.40 = 71,436.40/x
  3. Step 3: Cross multiply
    131,865.94x = 181,974.40 × 71,436.40
  4. Step 4: Simplify right side
    131,865.94x = 12,999,595,394.63
  5. Step 5: Solve for x
    x = 12,999,595,394.63/131,865.94
  6. Step 6: Final answer
    x = 98,581.90

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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.