Home / 131,865.40-181,974.40-71,436.16

Finding the Fourth Proportional to 131,865.40, 181,974.40 and 71,436.16

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Solution

The fourth proportional to 131,865.40, 181,974.40 and 71,436.16 is: 98,581.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,865.40 : 181,974.40 = 71,436.16 : x
  2. Step 2: Convert to fraction form
    131,865.40/181,974.40 = 71,436.16/x
  3. Step 3: Cross multiply
    131,865.40x = 181,974.40 × 71,436.16
  4. Step 4: Simplify right side
    131,865.40x = 12,999,552,354.30
  5. Step 5: Solve for x
    x = 12,999,552,354.30/131,865.40
  6. Step 6: Final answer
    x = 98,581.98

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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.