Home / 149,084.16-205,732.41-85,417.86

Finding the Fourth Proportional to 149,084.16, 205,732.41 and 85,417.86

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Solution

The fourth proportional to 149,084.16, 205,732.41 and 85,417.86 is: 117,874.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,084.16 : 205,732.41 = 85,417.86 : x
  2. Step 2: Convert to fraction form
    149,084.16/205,732.41 = 85,417.86/x
  3. Step 3: Cross multiply
    149,084.16x = 205,732.41 × 85,417.86
  4. Step 4: Simplify right side
    149,084.16x = 17,573,222,194.84
  5. Step 5: Solve for x
    x = 17,573,222,194.84/149,084.16
  6. Step 6: Final answer
    x = 117,874.51

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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.