Home / 109,989.09-151,758.66-66,968.07

Finding the Fourth Proportional to 109,989.09, 151,758.66 and 66,968.07

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Solution

The fourth proportional to 109,989.09, 151,758.66 and 66,968.07 is: 92,399.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,989.09 : 151,758.66 = 66,968.07 : x
  2. Step 2: Convert to fraction form
    109,989.09/151,758.66 = 66,968.07/x
  3. Step 3: Cross multiply
    109,989.09x = 151,758.66 × 66,968.07
  4. Step 4: Simplify right side
    109,989.09x = 10,162,984,248.02
  5. Step 5: Solve for x
    x = 10,162,984,248.02/109,989.09
  6. Step 6: Final answer
    x = 92,399.93

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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.