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Finding the Fourth Proportional to 164,867.70, 247,301.55 and 138,947.70

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Solution

The fourth proportional to 164,867.70, 247,301.55 and 138,947.70 is: 208,421.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,867.70 : 247,301.55 = 138,947.70 : x
  2. Step 2: Convert to fraction form
    164,867.70/247,301.55 = 138,947.70/x
  3. Step 3: Cross multiply
    164,867.70x = 247,301.55 × 138,947.70
  4. Step 4: Simplify right side
    164,867.70x = 34,361,981,578.94
  5. Step 5: Solve for x
    x = 34,361,981,578.94/164,867.70
  6. Step 6: Final answer
    x = 208,421.55

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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.