Home / 136,101.28-187,826-75,678.04

Finding the Fourth Proportional to 136,101.28, 187,826 and 75,678.04

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Solution

The fourth proportional to 136,101.28, 187,826 and 75,678.04 is: 104,439.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,101.28 : 187,826 = 75,678.04 : x
  2. Step 2: Convert to fraction form
    136,101.28/187,826 = 75,678.04/x
  3. Step 3: Cross multiply
    136,101.28x = 187,826 × 75,678.04
  4. Step 4: Simplify right side
    136,101.28x = 14,214,303,541.04
  5. Step 5: Solve for x
    x = 14,214,303,541.04/136,101.28
  6. Step 6: Final answer
    x = 104,439.16

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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.