Home / 106,087.64-159,019.86-81,073.40

Finding the Fourth Proportional to 106,087.64, 159,019.86 and 81,073.40

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Solution

The fourth proportional to 106,087.64, 159,019.86 and 81,073.40 is: 121,524.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,087.64 : 159,019.86 = 81,073.40 : x
  2. Step 2: Convert to fraction form
    106,087.64/159,019.86 = 81,073.40/x
  3. Step 3: Cross multiply
    106,087.64x = 159,019.86 × 81,073.40
  4. Step 4: Simplify right side
    106,087.64x = 12,892,280,717.72
  5. Step 5: Solve for x
    x = 12,892,280,717.72/106,087.64
  6. Step 6: Final answer
    x = 121,524.81

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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.