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Finding the Fourth Proportional to 185,259.81, 255,658.61 and 100,376.87

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Solution

The fourth proportional to 185,259.81, 255,658.61 and 100,376.87 is: 138,520.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,259.81 : 255,658.61 = 100,376.87 : x
  2. Step 2: Convert to fraction form
    185,259.81/255,658.61 = 100,376.87/x
  3. Step 3: Cross multiply
    185,259.81x = 255,658.61 × 100,376.87
  4. Step 4: Simplify right side
    185,259.81x = 25,662,211,197.61
  5. Step 5: Solve for x
    x = 25,662,211,197.61/185,259.81
  6. Step 6: Final answer
    x = 138,520.12

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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.