Home / 90,869.57-136,215.76-43,472.29

Finding the Fourth Proportional to 90,869.57, 136,215.76 and 43,472.29

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Solution

The fourth proportional to 90,869.57, 136,215.76 and 43,472.29 is: 65,166.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,869.57 : 136,215.76 = 43,472.29 : x
  2. Step 2: Convert to fraction form
    90,869.57/136,215.76 = 43,472.29/x
  3. Step 3: Cross multiply
    90,869.57x = 136,215.76 × 43,472.29
  4. Step 4: Simplify right side
    90,869.57x = 5,921,611,021.29
  5. Step 5: Solve for x
    x = 5,921,611,021.29/90,869.57
  6. Step 6: Final answer
    x = 65,166.05

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1.5x scale

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.