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Finding the Fourth Proportional to 163,403.82, 225,521.82 and 99,778.32

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Solution

The fourth proportional to 163,403.82, 225,521.82 and 99,778.32 is: 137,709.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,403.82 : 225,521.82 = 99,778.32 : x
  2. Step 2: Convert to fraction form
    163,403.82/225,521.82 = 99,778.32/x
  3. Step 3: Cross multiply
    163,403.82x = 225,521.82 × 99,778.32
  4. Step 4: Simplify right side
    163,403.82x = 22,502,188,322.94
  5. Step 5: Solve for x
    x = 22,502,188,322.94/163,403.82
  6. Step 6: Final answer
    x = 137,709.07

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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.