Home / 131,869.71-181,979.44-71,441.53

Finding the Fourth Proportional to 131,869.71, 181,979.44 and 71,441.53

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Solution

The fourth proportional to 131,869.71, 181,979.44 and 71,441.53 is: 98,588.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,869.71 : 181,979.44 = 71,441.53 : x
  2. Step 2: Convert to fraction form
    131,869.71/181,979.44 = 71,441.53/x
  3. Step 3: Cross multiply
    131,869.71x = 181,979.44 × 71,441.53
  4. Step 4: Simplify right side
    131,869.71x = 13,000,889,622.14
  5. Step 5: Solve for x
    x = 13,000,889,622.14/131,869.71
  6. Step 6: Final answer
    x = 98,588.90

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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.