Home / 115,579.62-159,487.98-79,312.16

Finding the Fourth Proportional to 115,579.62, 159,487.98 and 79,312.16

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Solution

The fourth proportional to 115,579.62, 159,487.98 and 79,312.16 is: 109,442.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,579.62 : 159,487.98 = 79,312.16 : x
  2. Step 2: Convert to fraction form
    115,579.62/159,487.98 = 79,312.16/x
  3. Step 3: Cross multiply
    115,579.62x = 159,487.98 × 79,312.16
  4. Step 4: Simplify right side
    115,579.62x = 12,649,336,187.84
  5. Step 5: Solve for x
    x = 12,649,336,187.84/115,579.62
  6. Step 6: Final answer
    x = 109,442.62

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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.