Home / 163,257.12-225,319.59-99,631.89

Finding the Fourth Proportional to 163,257.12, 225,319.59 and 99,631.89

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Solution

The fourth proportional to 163,257.12, 225,319.59 and 99,631.89 is: 137,507.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,257.12 : 225,319.59 = 99,631.89 : x
  2. Step 2: Convert to fraction form
    163,257.12/225,319.59 = 99,631.89/x
  3. Step 3: Cross multiply
    163,257.12x = 225,319.59 × 99,631.89
  4. Step 4: Simplify right side
    163,257.12x = 22,449,016,605.73
  5. Step 5: Solve for x
    x = 22,449,016,605.73/163,257.12
  6. Step 6: Final answer
    x = 137,507.12

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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.