Home / 135,989.20-204,056.70-57,111.40

Finding the Fourth Proportional to 135,989.20, 204,056.70 and 57,111.40

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Solution

The fourth proportional to 135,989.20, 204,056.70 and 57,111.40 is: 85,697.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,989.20 : 204,056.70 = 57,111.40 : x
  2. Step 2: Convert to fraction form
    135,989.20/204,056.70 = 57,111.40/x
  3. Step 3: Cross multiply
    135,989.20x = 204,056.70 × 57,111.40
  4. Step 4: Simplify right side
    135,989.20x = 11,653,963,816.38
  5. Step 5: Solve for x
    x = 11,653,963,816.38/135,989.20
  6. Step 6: Final answer
    x = 85,697.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.