Home / 107,812.24-161,521.32-78,156.52

Finding the Fourth Proportional to 107,812.24, 161,521.32 and 78,156.52

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Solution

The fourth proportional to 107,812.24, 161,521.32 and 78,156.52 is: 117,091.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,812.24 : 161,521.32 = 78,156.52 : x
  2. Step 2: Convert to fraction form
    107,812.24/161,521.32 = 78,156.52/x
  3. Step 3: Cross multiply
    107,812.24x = 161,521.32 × 78,156.52
  4. Step 4: Simplify right side
    107,812.24x = 12,623,944,277.01
  5. Step 5: Solve for x
    x = 12,623,944,277.01/107,812.24
  6. Step 6: Final answer
    x = 117,091.94

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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.