Home / 81,141.84-121,566.60-76,262.16

Finding the Fourth Proportional to 81,141.84, 121,566.60 and 76,262.16

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Solution

The fourth proportional to 81,141.84, 121,566.60 and 76,262.16 is: 114,255.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,141.84 : 121,566.60 = 76,262.16 : x
  2. Step 2: Convert to fraction form
    81,141.84/121,566.60 = 76,262.16/x
  3. Step 3: Cross multiply
    81,141.84x = 121,566.60 × 76,262.16
  4. Step 4: Simplify right side
    81,141.84x = 9,270,931,499.86
  5. Step 5: Solve for x
    x = 9,270,931,499.86/81,141.84
  6. Step 6: Final answer
    x = 114,255.87

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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.