Home / 268,818.15-403,110.05-81,785.91

Finding the Fourth Proportional to 268,818.15, 403,110.05 and 81,785.91

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Solution

The fourth proportional to 268,818.15, 403,110.05 and 81,785.91 is: 122,643.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,818.15 : 403,110.05 = 81,785.91 : x
  2. Step 2: Convert to fraction form
    268,818.15/403,110.05 = 81,785.91/x
  3. Step 3: Cross multiply
    268,818.15x = 403,110.05 × 81,785.91
  4. Step 4: Simplify right side
    268,818.15x = 32,968,721,860.47
  5. Step 5: Solve for x
    x = 32,968,721,860.47/268,818.15
  6. Step 6: Final answer
    x = 122,643.21

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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.