Home / 106,570.51-159,703.58-78,268.61

Finding the Fourth Proportional to 106,570.51, 159,703.58 and 78,268.61

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Solution

The fourth proportional to 106,570.51, 159,703.58 and 78,268.61 is: 117,291.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,570.51 : 159,703.58 = 78,268.61 : x
  2. Step 2: Convert to fraction form
    106,570.51/159,703.58 = 78,268.61/x
  3. Step 3: Cross multiply
    106,570.51x = 159,703.58 × 78,268.61
  4. Step 4: Simplify right side
    106,570.51x = 12,499,777,813.55
  5. Step 5: Solve for x
    x = 12,499,777,813.55/106,570.51
  6. Step 6: Final answer
    x = 117,291.15

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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.