Home / 137,632.28-189,940.07-77,222.07

Finding the Fourth Proportional to 137,632.28, 189,940.07 and 77,222.07

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Solution

The fourth proportional to 137,632.28, 189,940.07 and 77,222.07 is: 106,570.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,632.28 : 189,940.07 = 77,222.07 : x
  2. Step 2: Convert to fraction form
    137,632.28/189,940.07 = 77,222.07/x
  3. Step 3: Cross multiply
    137,632.28x = 189,940.07 × 77,222.07
  4. Step 4: Simplify right side
    137,632.28x = 14,667,565,574.40
  5. Step 5: Solve for x
    x = 14,667,565,574.40/137,632.28
  6. Step 6: Final answer
    x = 106,570.68

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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.