Home / 142,869.87-214,349.43-86,006.04

Finding the Fourth Proportional to 142,869.87, 214,349.43 and 86,006.04

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Solution

The fourth proportional to 142,869.87, 214,349.43 and 86,006.04 is: 129,035.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,869.87 : 214,349.43 = 86,006.04 : x
  2. Step 2: Convert to fraction form
    142,869.87/214,349.43 = 86,006.04/x
  3. Step 3: Cross multiply
    142,869.87x = 214,349.43 × 86,006.04
  4. Step 4: Simplify right side
    142,869.87x = 18,435,345,650.56
  5. Step 5: Solve for x
    x = 18,435,345,650.56/142,869.87
  6. Step 6: Final answer
    x = 129,035.92

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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.