Home / 109,782.11-151,440.87-66,774.75

Finding the Fourth Proportional to 109,782.11, 151,440.87 and 66,774.75

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Solution

The fourth proportional to 109,782.11, 151,440.87 and 66,774.75 is: 92,113.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,782.11 : 151,440.87 = 66,774.75 : x
  2. Step 2: Convert to fraction form
    109,782.11/151,440.87 = 66,774.75/x
  3. Step 3: Cross multiply
    109,782.11x = 151,440.87 × 66,774.75
  4. Step 4: Simplify right side
    109,782.11x = 10,112,426,445.70
  5. Step 5: Solve for x
    x = 10,112,426,445.70/109,782.11
  6. Step 6: Final answer
    x = 92,113.61

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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.