Home / 137,288.25-189,401.76-86,284.53

Finding the Fourth Proportional to 137,288.25, 189,401.76 and 86,284.53

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Solution

The fourth proportional to 137,288.25, 189,401.76 and 86,284.53 is: 119,037.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,288.25 : 189,401.76 = 86,284.53 : x
  2. Step 2: Convert to fraction form
    137,288.25/189,401.76 = 86,284.53/x
  3. Step 3: Cross multiply
    137,288.25x = 189,401.76 × 86,284.53
  4. Step 4: Simplify right side
    137,288.25x = 16,342,441,842.77
  5. Step 5: Solve for x
    x = 16,342,441,842.77/137,288.25
  6. Step 6: Final answer
    x = 119,037.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.