Home / 190,815.12-286,353.91-66,156.12

Finding the Fourth Proportional to 190,815.12, 286,353.91 and 66,156.12

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Solution

The fourth proportional to 190,815.12, 286,353.91 and 66,156.12 is: 99,279.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,815.12 : 286,353.91 = 66,156.12 : x
  2. Step 2: Convert to fraction form
    190,815.12/286,353.91 = 66,156.12/x
  3. Step 3: Cross multiply
    190,815.12x = 286,353.91 × 66,156.12
  4. Step 4: Simplify right side
    190,815.12x = 18,944,062,723.69
  5. Step 5: Solve for x
    x = 18,944,062,723.69/190,815.12
  6. Step 6: Final answer
    x = 99,279.67

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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.