Home / 136,240.81-187,990.65-75,811.27

Finding the Fourth Proportional to 136,240.81, 187,990.65 and 75,811.27

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Solution

The fourth proportional to 136,240.81, 187,990.65 and 75,811.27 is: 104,607.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,240.81 : 187,990.65 = 75,811.27 : x
  2. Step 2: Convert to fraction form
    136,240.81/187,990.65 = 75,811.27/x
  3. Step 3: Cross multiply
    136,240.81x = 187,990.65 × 75,811.27
  4. Step 4: Simplify right side
    136,240.81x = 14,251,809,454.65
  5. Step 5: Solve for x
    x = 14,251,809,454.65/136,240.81
  6. Step 6: Final answer
    x = 104,607.49

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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.