Home / 106,728.25-147,272.43-58,978.75

Finding the Fourth Proportional to 106,728.25, 147,272.43 and 58,978.75

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Solution

The fourth proportional to 106,728.25, 147,272.43 and 58,978.75 is: 81,383.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,728.25 : 147,272.43 = 58,978.75 : x
  2. Step 2: Convert to fraction form
    106,728.25/147,272.43 = 58,978.75/x
  3. Step 3: Cross multiply
    106,728.25x = 147,272.43 × 58,978.75
  4. Step 4: Simplify right side
    106,728.25x = 8,685,943,830.86
  5. Step 5: Solve for x
    x = 8,685,943,830.86/106,728.25
  6. Step 6: Final answer
    x = 81,383.74

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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.