Home / 115,586.56-159,420.96-79,836.40

Finding the Fourth Proportional to 115,586.56, 159,420.96 and 79,836.40

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Solution

The fourth proportional to 115,586.56, 159,420.96 and 79,836.40 is: 110,113.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,586.56 : 159,420.96 = 79,836.40 : x
  2. Step 2: Convert to fraction form
    115,586.56/159,420.96 = 79,836.40/x
  3. Step 3: Cross multiply
    115,586.56x = 159,420.96 × 79,836.40
  4. Step 4: Simplify right side
    115,586.56x = 12,727,595,530.94
  5. Step 5: Solve for x
    x = 12,727,595,530.94/115,586.56
  6. Step 6: Final answer
    x = 110,113.11

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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.