Home / 154,434.24-213,123.70-86,450.81

Finding the Fourth Proportional to 154,434.24, 213,123.70 and 86,450.81

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Solution

The fourth proportional to 154,434.24, 213,123.70 and 86,450.81 is: 119,304.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,434.24 : 213,123.70 = 86,450.81 : x
  2. Step 2: Convert to fraction form
    154,434.24/213,123.70 = 86,450.81/x
  3. Step 3: Cross multiply
    154,434.24x = 213,123.70 × 86,450.81
  4. Step 4: Simplify right side
    154,434.24x = 18,424,716,493.32
  5. Step 5: Solve for x
    x = 18,424,716,493.32/154,434.24
  6. Step 6: Final answer
    x = 119,304.61

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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.