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Finding the Fourth Proportional to 179,658.90, 269,315.55 and 139,655.70

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Solution

The fourth proportional to 179,658.90, 269,315.55 and 139,655.70 is: 209,349.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,658.90 : 269,315.55 = 139,655.70 : x
  2. Step 2: Convert to fraction form
    179,658.90/269,315.55 = 139,655.70/x
  3. Step 3: Cross multiply
    179,658.90x = 269,315.55 × 139,655.70
  4. Step 4: Simplify right side
    179,658.90x = 37,611,451,656.14
  5. Step 5: Solve for x
    x = 37,611,451,656.14/179,658.90
  6. Step 6: Final answer
    x = 209,349.23

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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.