Home / 134,589.84-185,750.28-78,003.60

Finding the Fourth Proportional to 134,589.84, 185,750.28 and 78,003.60

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Solution

The fourth proportional to 134,589.84, 185,750.28 and 78,003.60 is: 107,654.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,589.84 : 185,750.28 = 78,003.60 : x
  2. Step 2: Convert to fraction form
    134,589.84/185,750.28 = 78,003.60/x
  3. Step 3: Cross multiply
    134,589.84x = 185,750.28 × 78,003.60
  4. Step 4: Simplify right side
    134,589.84x = 14,489,190,541.01
  5. Step 5: Solve for x
    x = 14,489,190,541.01/134,589.84
  6. Step 6: Final answer
    x = 107,654.42

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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.