Home / 142,815.80-214,223.70-120,006.20

Finding the Fourth Proportional to 142,815.80, 214,223.70 and 120,006.20

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Solution

The fourth proportional to 142,815.80, 214,223.70 and 120,006.20 is: 180,009.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,815.80 : 214,223.70 = 120,006.20 : x
  2. Step 2: Convert to fraction form
    142,815.80/214,223.70 = 120,006.20/x
  3. Step 3: Cross multiply
    142,815.80x = 214,223.70 × 120,006.20
  4. Step 4: Simplify right side
    142,815.80x = 25,708,172,186.94
  5. Step 5: Solve for x
    x = 25,708,172,186.94/142,815.80
  6. Step 6: Final answer
    x = 180,009.30

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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.