Home / 154,869.86-213,722.89-85,957.49

Finding the Fourth Proportional to 154,869.86, 213,722.89 and 85,957.49

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Solution

The fourth proportional to 154,869.86, 213,722.89 and 85,957.49 is: 118,622.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,869.86 : 213,722.89 = 85,957.49 : x
  2. Step 2: Convert to fraction form
    154,869.86/213,722.89 = 85,957.49/x
  3. Step 3: Cross multiply
    154,869.86x = 213,722.89 × 85,957.49
  4. Step 4: Simplify right side
    154,869.86x = 18,371,083,499.36
  5. Step 5: Solve for x
    x = 18,371,083,499.36/154,869.86
  6. Step 6: Final answer
    x = 118,622.71

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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.