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Finding the Fourth Proportional to 165,092.70, 247,639.05 and 138,848.70

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Solution

The fourth proportional to 165,092.70, 247,639.05 and 138,848.70 is: 208,273.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,092.70 : 247,639.05 = 138,848.70 : x
  2. Step 2: Convert to fraction form
    165,092.70/247,639.05 = 138,848.70/x
  3. Step 3: Cross multiply
    165,092.70x = 247,639.05 × 138,848.70
  4. Step 4: Simplify right side
    165,092.70x = 34,384,360,161.74
  5. Step 5: Solve for x
    x = 34,384,360,161.74/165,092.70
  6. Step 6: Final answer
    x = 208,273.05

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1.5x scale

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.