Home / 86,869.57-119,818.20-79,722.56

Finding the Fourth Proportional to 86,869.57, 119,818.20 and 79,722.56

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Solution

The fourth proportional to 86,869.57, 119,818.20 and 79,722.56 is: 109,960.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,869.57 : 119,818.20 = 79,722.56 : x
  2. Step 2: Convert to fraction form
    86,869.57/119,818.20 = 79,722.56/x
  3. Step 3: Cross multiply
    86,869.57x = 119,818.20 × 79,722.56
  4. Step 4: Simplify right side
    86,869.57x = 9,552,213,638.59
  5. Step 5: Solve for x
    x = 9,552,213,638.59/86,869.57
  6. Step 6: Final answer
    x = 109,960.41

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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.