Home / 143,498.78-215,150.76-80,362.32

Finding the Fourth Proportional to 143,498.78, 215,150.76 and 80,362.32

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Solution

The fourth proportional to 143,498.78, 215,150.76 and 80,362.32 is: 120,488.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,498.78 : 215,150.76 = 80,362.32 : x
  2. Step 2: Convert to fraction form
    143,498.78/215,150.76 = 80,362.32/x
  3. Step 3: Cross multiply
    143,498.78x = 215,150.76 × 80,362.32
  4. Step 4: Simplify right side
    143,498.78x = 17,290,014,223.36
  5. Step 5: Solve for x
    x = 17,290,014,223.36/143,498.78
  6. Step 6: Final answer
    x = 120,488.93

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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.