Home / 131,865.96-181,974.80-71,438.13

Finding the Fourth Proportional to 131,865.96, 181,974.80 and 71,438.13

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Solution

The fourth proportional to 131,865.96, 181,974.80 and 71,438.13 is: 98,584.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,865.96 : 181,974.80 = 71,438.13 : x
  2. Step 2: Convert to fraction form
    131,865.96/181,974.80 = 71,438.13/x
  3. Step 3: Cross multiply
    131,865.96x = 181,974.80 × 71,438.13
  4. Step 4: Simplify right side
    131,865.96x = 12,999,939,085.92
  5. Step 5: Solve for x
    x = 12,999,939,085.92/131,865.96
  6. Step 6: Final answer
    x = 98,584.49

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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.