Home / 268,489.24-402,732-91,121.12

Finding the Fourth Proportional to 268,489.24, 402,732 and 91,121.12

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Solution

The fourth proportional to 268,489.24, 402,732 and 91,121.12 is: 136,681.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,489.24 : 402,732 = 91,121.12 : x
  2. Step 2: Convert to fraction form
    268,489.24/402,732 = 91,121.12/x
  3. Step 3: Cross multiply
    268,489.24x = 402,732 × 91,121.12
  4. Step 4: Simplify right side
    268,489.24x = 36,697,390,899.84
  5. Step 5: Solve for x
    x = 36,697,390,899.84/268,489.24
  6. Step 6: Final answer
    x = 136,681.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.