Home / 137,031.62-189,104.36-76,604.81

Finding the Fourth Proportional to 137,031.62, 189,104.36 and 76,604.81

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Solution

The fourth proportional to 137,031.62, 189,104.36 and 76,604.81 is: 105,715.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,031.62 : 189,104.36 = 76,604.81 : x
  2. Step 2: Convert to fraction form
    137,031.62/189,104.36 = 76,604.81/x
  3. Step 3: Cross multiply
    137,031.62x = 189,104.36 × 76,604.81
  4. Step 4: Simplify right side
    137,031.62x = 14,486,302,239.43
  5. Step 5: Solve for x
    x = 14,486,302,239.43/137,031.62
  6. Step 6: Final answer
    x = 105,715.04

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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.