Home / 102,679.10-154,018.65-91,403.90

Finding the Fourth Proportional to 102,679.10, 154,018.65 and 91,403.90

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Solution

The fourth proportional to 102,679.10, 154,018.65 and 91,403.90 is: 137,105.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,679.10 : 154,018.65 = 91,403.90 : x
  2. Step 2: Convert to fraction form
    102,679.10/154,018.65 = 91,403.90/x
  3. Step 3: Cross multiply
    102,679.10x = 154,018.65 × 91,403.90
  4. Step 4: Simplify right side
    102,679.10x = 14,077,905,282.74
  5. Step 5: Solve for x
    x = 14,077,905,282.74/102,679.10
  6. Step 6: Final answer
    x = 137,105.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.