Home / 136,983.66-189,013.38-76,534.98

Finding the Fourth Proportional to 136,983.66, 189,013.38 and 76,534.98

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Solution

The fourth proportional to 136,983.66, 189,013.38 and 76,534.98 is: 105,604.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,983.66 : 189,013.38 = 76,534.98 : x
  2. Step 2: Convert to fraction form
    136,983.66/189,013.38 = 76,534.98/x
  3. Step 3: Cross multiply
    136,983.66x = 189,013.38 × 76,534.98
  4. Step 4: Simplify right side
    136,983.66x = 14,466,135,258.03
  5. Step 5: Solve for x
    x = 14,466,135,258.03/136,983.66
  6. Step 6: Final answer
    x = 105,604.82

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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.