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Finding the Fourth Proportional to 163,385.69, 225,471.71 and 90,788.27

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Solution

The fourth proportional to 163,385.69, 225,471.71 and 90,788.27 is: 125,287.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,385.69 : 225,471.71 = 90,788.27 : x
  2. Step 2: Convert to fraction form
    163,385.69/225,471.71 = 90,788.27/x
  3. Step 3: Cross multiply
    163,385.69x = 225,471.71 × 90,788.27
  4. Step 4: Simplify right side
    163,385.69x = 20,470,186,030.90
  5. Step 5: Solve for x
    x = 20,470,186,030.90/163,385.69
  6. Step 6: Final answer
    x = 125,287.51

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1.5x scale

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.