Home / 106,643.10-159,964.65-105,087.90

Finding the Fourth Proportional to 106,643.10, 159,964.65 and 105,087.90

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Solution

The fourth proportional to 106,643.10, 159,964.65 and 105,087.90 is: 157,631.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,643.10 : 159,964.65 = 105,087.90 : x
  2. Step 2: Convert to fraction form
    106,643.10/159,964.65 = 105,087.90/x
  3. Step 3: Cross multiply
    106,643.10x = 159,964.65 × 105,087.90
  4. Step 4: Simplify right side
    106,643.10x = 16,810,349,142.74
  5. Step 5: Solve for x
    x = 16,810,349,142.74/106,643.10
  6. Step 6: Final answer
    x = 157,631.85

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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.