Home / 149,099.55-205,758.28-81,117.02

Finding the Fourth Proportional to 149,099.55, 205,758.28 and 81,117.02

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Solution

The fourth proportional to 149,099.55, 205,758.28 and 81,117.02 is: 111,941.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,099.55 : 205,758.28 = 81,117.02 : x
  2. Step 2: Convert to fraction form
    149,099.55/205,758.28 = 81,117.02/x
  3. Step 3: Cross multiply
    149,099.55x = 205,758.28 × 81,117.02
  4. Step 4: Simplify right side
    149,099.55x = 16,690,497,392.06
  5. Step 5: Solve for x
    x = 16,690,497,392.06/149,099.55
  6. Step 6: Final answer
    x = 111,941.97

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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.