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Finding the Fourth Proportional to 163,855, 226,116.18 and 91,257.40

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Solution

The fourth proportional to 163,855, 226,116.18 and 91,257.40 is: 125,933.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,855 : 226,116.18 = 91,257.40 : x
  2. Step 2: Convert to fraction form
    163,855/226,116.18 = 91,257.40/x
  3. Step 3: Cross multiply
    163,855x = 226,116.18 × 91,257.40
  4. Step 4: Simplify right side
    163,855x = 20,634,774,684.73
  5. Step 5: Solve for x
    x = 20,634,774,684.73/163,855
  6. Step 6: Final answer
    x = 125,933.14

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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.