Home / 138,807.69-191,586.23-90,324.17

Finding the Fourth Proportional to 138,807.69, 191,586.23 and 90,324.17

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Solution

The fourth proportional to 138,807.69, 191,586.23 and 90,324.17 is: 124,667.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,807.69 : 191,586.23 = 90,324.17 : x
  2. Step 2: Convert to fraction form
    138,807.69/191,586.23 = 90,324.17/x
  3. Step 3: Cross multiply
    138,807.69x = 191,586.23 × 90,324.17
  4. Step 4: Simplify right side
    138,807.69x = 17,304,867,912.96
  5. Step 5: Solve for x
    x = 17,304,867,912.96/138,807.69
  6. Step 6: Final answer
    x = 124,667.93

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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.