Home / 135,109.94-186,432.67-76,968.20

Finding the Fourth Proportional to 135,109.94, 186,432.67 and 76,968.20

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Solution

The fourth proportional to 135,109.94, 186,432.67 and 76,968.20 is: 106,205.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,109.94 : 186,432.67 = 76,968.20 : x
  2. Step 2: Convert to fraction form
    135,109.94/186,432.67 = 76,968.20/x
  3. Step 3: Cross multiply
    135,109.94x = 186,432.67 × 76,968.20
  4. Step 4: Simplify right side
    135,109.94x = 14,349,387,693.20
  5. Step 5: Solve for x
    x = 14,349,387,693.20/135,109.94
  6. Step 6: Final answer
    x = 106,205.27

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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.