Home / 155,878.11-215,111.75-84,258.09

Finding the Fourth Proportional to 155,878.11, 215,111.75 and 84,258.09

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Solution

The fourth proportional to 155,878.11, 215,111.75 and 84,258.09 is: 116,276.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,878.11 : 215,111.75 = 84,258.09 : x
  2. Step 2: Convert to fraction form
    155,878.11/215,111.75 = 84,258.09/x
  3. Step 3: Cross multiply
    155,878.11x = 215,111.75 × 84,258.09
  4. Step 4: Simplify right side
    155,878.11x = 18,124,904,770.27
  5. Step 5: Solve for x
    x = 18,124,904,770.27/155,878.11
  6. Step 6: Final answer
    x = 116,276.14

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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.