Home / 143,967.24-215,968.41-77,315.85

Finding the Fourth Proportional to 143,967.24, 215,968.41 and 77,315.85

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Solution

The fourth proportional to 143,967.24, 215,968.41 and 77,315.85 is: 115,983.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,967.24 : 215,968.41 = 77,315.85 : x
  2. Step 2: Convert to fraction form
    143,967.24/215,968.41 = 77,315.85/x
  3. Step 3: Cross multiply
    143,967.24x = 215,968.41 × 77,315.85
  4. Step 4: Simplify right side
    143,967.24x = 16,697,781,192.30
  5. Step 5: Solve for x
    x = 16,697,781,192.30/143,967.24
  6. Step 6: Final answer
    x = 115,983.20

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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.