Home / 106,400.50-159,781.53-71,088.74

Finding the Fourth Proportional to 106,400.50, 159,781.53 and 71,088.74

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Solution

The fourth proportional to 106,400.50, 159,781.53 and 71,088.74 is: 106,753.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,400.50 : 159,781.53 = 71,088.74 : x
  2. Step 2: Convert to fraction form
    106,400.50/159,781.53 = 71,088.74/x
  3. Step 3: Cross multiply
    106,400.50x = 159,781.53 × 71,088.74
  4. Step 4: Simplify right side
    106,400.50x = 11,358,667,709.83
  5. Step 5: Solve for x
    x = 11,358,667,709.83/106,400.50
  6. Step 6: Final answer
    x = 106,753.89

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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.