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Finding the Fourth Proportional to 199,610.85, 299,509.79 and 87,276.63

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Solution

The fourth proportional to 199,610.85, 299,509.79 and 87,276.63 is: 130,955.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,610.85 : 299,509.79 = 87,276.63 : x
  2. Step 2: Convert to fraction form
    199,610.85/299,509.79 = 87,276.63/x
  3. Step 3: Cross multiply
    199,610.85x = 299,509.79 × 87,276.63
  4. Step 4: Simplify right side
    199,610.85x = 26,140,204,686.82
  5. Step 5: Solve for x
    x = 26,140,204,686.82/199,610.85
  6. Step 6: Final answer
    x = 130,955.83

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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.