Home / 136,982.34-189,033.75-76,553.91

Finding the Fourth Proportional to 136,982.34, 189,033.75 and 76,553.91

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Solution

The fourth proportional to 136,982.34, 189,033.75 and 76,553.91 is: 105,643.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,982.34 : 189,033.75 = 76,553.91 : x
  2. Step 2: Convert to fraction form
    136,982.34/189,033.75 = 76,553.91/x
  3. Step 3: Cross multiply
    136,982.34x = 189,033.75 × 76,553.91
  4. Step 4: Simplify right side
    136,982.34x = 14,471,272,684.46
  5. Step 5: Solve for x
    x = 14,471,272,684.46/136,982.34
  6. Step 6: Final answer
    x = 105,643.35

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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.