Home / 106,086.64-159,018.36-81,072.40

Finding the Fourth Proportional to 106,086.64, 159,018.36 and 81,072.40

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Solution

The fourth proportional to 106,086.64, 159,018.36 and 81,072.40 is: 121,523.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,086.64 : 159,018.36 = 81,072.40 : x
  2. Step 2: Convert to fraction form
    106,086.64/159,018.36 = 81,072.40/x
  3. Step 3: Cross multiply
    106,086.64x = 159,018.36 × 81,072.40
  4. Step 4: Simplify right side
    106,086.64x = 12,892,000,089.26
  5. Step 5: Solve for x
    x = 12,892,000,089.26/106,086.64
  6. Step 6: Final answer
    x = 121,523.31

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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.