Home / 88,687.15-133,030.73-81,429.55

Finding the Fourth Proportional to 88,687.15, 133,030.73 and 81,429.55

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Solution

The fourth proportional to 88,687.15, 133,030.73 and 81,429.55 is: 122,144.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,687.15 : 133,030.73 = 81,429.55 : x
  2. Step 2: Convert to fraction form
    88,687.15/133,030.73 = 81,429.55/x
  3. Step 3: Cross multiply
    88,687.15x = 133,030.73 × 81,429.55
  4. Step 4: Simplify right side
    88,687.15x = 10,832,632,072.92
  5. Step 5: Solve for x
    x = 10,832,632,072.92/88,687.15
  6. Step 6: Final answer
    x = 122,144.33

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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.