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Finding the Fourth Proportional to 163,336.48, 225,398.64 and 99,780.64

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Solution

The fourth proportional to 163,336.48, 225,398.64 and 99,780.64 is: 137,693.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,336.48 : 225,398.64 = 99,780.64 : x
  2. Step 2: Convert to fraction form
    163,336.48/225,398.64 = 99,780.64/x
  3. Step 3: Cross multiply
    163,336.48x = 225,398.64 × 99,780.64
  4. Step 4: Simplify right side
    163,336.48x = 22,490,420,554.33
  5. Step 5: Solve for x
    x = 22,490,420,554.33/163,336.48
  6. Step 6: Final answer
    x = 137,693.80

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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.