Home / 268,705.08-403,117.56-81,731.16

Finding the Fourth Proportional to 268,705.08, 403,117.56 and 81,731.16

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Solution

The fourth proportional to 268,705.08, 403,117.56 and 81,731.16 is: 122,614.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,705.08 : 403,117.56 = 81,731.16 : x
  2. Step 2: Convert to fraction form
    268,705.08/403,117.56 = 81,731.16/x
  3. Step 3: Cross multiply
    268,705.08x = 403,117.56 × 81,731.16
  4. Step 4: Simplify right side
    268,705.08x = 32,947,265,795.17
  5. Step 5: Solve for x
    x = 32,947,265,795.17/268,705.08
  6. Step 6: Final answer
    x = 122,614.97

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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.