Home / 109,689.12-164,559.60-57,086.64

Finding the Fourth Proportional to 109,689.12, 164,559.60 and 57,086.64

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Solution

The fourth proportional to 109,689.12, 164,559.60 and 57,086.64 is: 85,643.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,689.12 : 164,559.60 = 57,086.64 : x
  2. Step 2: Convert to fraction form
    109,689.12/164,559.60 = 57,086.64/x
  3. Step 3: Cross multiply
    109,689.12x = 164,559.60 × 57,086.64
  4. Step 4: Simplify right side
    109,689.12x = 9,394,154,643.74
  5. Step 5: Solve for x
    x = 9,394,154,643.74/109,689.12
  6. Step 6: Final answer
    x = 85,643.45

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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.