Home / 115,880.62-159,924-64,890.76

Finding the Fourth Proportional to 115,880.62, 159,924 and 64,890.76

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Solution

The fourth proportional to 115,880.62, 159,924 and 64,890.76 is: 89,554.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,880.62 : 159,924 = 64,890.76 : x
  2. Step 2: Convert to fraction form
    115,880.62/159,924 = 64,890.76/x
  3. Step 3: Cross multiply
    115,880.62x = 159,924 × 64,890.76
  4. Step 4: Simplify right side
    115,880.62x = 10,377,589,902.24
  5. Step 5: Solve for x
    x = 10,377,589,902.24/115,880.62
  6. Step 6: Final answer
    x = 89,554.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.