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Finding the Fourth Proportional to 174,019.80, 261,029.70 and 139,027.80

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Solution

The fourth proportional to 174,019.80, 261,029.70 and 139,027.80 is: 208,541.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,019.80 : 261,029.70 = 139,027.80 : x
  2. Step 2: Convert to fraction form
    174,019.80/261,029.70 = 139,027.80/x
  3. Step 3: Cross multiply
    174,019.80x = 261,029.70 × 139,027.80
  4. Step 4: Simplify right side
    174,019.80x = 36,290,384,925.66
  5. Step 5: Solve for x
    x = 36,290,384,925.66/174,019.80
  6. Step 6: Final answer
    x = 208,541.70

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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.