Home / 109,782.23-151,441.04-66,774.88

Finding the Fourth Proportional to 109,782.23, 151,441.04 and 66,774.88

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Solution

The fourth proportional to 109,782.23, 151,441.04 and 66,774.88 is: 92,113.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,782.23 : 151,441.04 = 66,774.88 : x
  2. Step 2: Convert to fraction form
    109,782.23/151,441.04 = 66,774.88/x
  3. Step 3: Cross multiply
    109,782.23x = 151,441.04 × 66,774.88
  4. Step 4: Simplify right side
    109,782.23x = 10,112,457,061.41
  5. Step 5: Solve for x
    x = 10,112,457,061.41/109,782.23
  6. Step 6: Final answer
    x = 92,113.79

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1.5x scale

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.