Home / 136,967.24-189,033.56-78,822.79

Finding the Fourth Proportional to 136,967.24, 189,033.56 and 78,822.79

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Solution

The fourth proportional to 136,967.24, 189,033.56 and 78,822.79 is: 108,786.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,967.24 : 189,033.56 = 78,822.79 : x
  2. Step 2: Convert to fraction form
    136,967.24/189,033.56 = 78,822.79/x
  3. Step 3: Cross multiply
    136,967.24x = 189,033.56 × 78,822.79
  4. Step 4: Simplify right side
    136,967.24x = 14,900,152,475.10
  5. Step 5: Solve for x
    x = 14,900,152,475.10/136,967.24
  6. Step 6: Final answer
    x = 108,786.25

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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.