Home / 268,205.13-402,359.58-90,741.06

Finding the Fourth Proportional to 268,205.13, 402,359.58 and 90,741.06

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Solution

The fourth proportional to 268,205.13, 402,359.58 and 90,741.06 is: 136,129.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,205.13 : 402,359.58 = 90,741.06 : x
  2. Step 2: Convert to fraction form
    268,205.13/402,359.58 = 90,741.06/x
  3. Step 3: Cross multiply
    268,205.13x = 402,359.58 × 90,741.06
  4. Step 4: Simplify right side
    268,205.13x = 36,510,534,790.35
  5. Step 5: Solve for x
    x = 36,510,534,790.35/268,205.13
  6. Step 6: Final answer
    x = 136,129.14

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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.