Home / 113,784.60-170,288.10-99,787.80

Finding the Fourth Proportional to 113,784.60, 170,288.10 and 99,787.80

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Solution

The fourth proportional to 113,784.60, 170,288.10 and 99,787.80 is: 149,340.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,784.60 : 170,288.10 = 99,787.80 : x
  2. Step 2: Convert to fraction form
    113,784.60/170,288.10 = 99,787.80/x
  3. Step 3: Cross multiply
    113,784.60x = 170,288.10 × 99,787.80
  4. Step 4: Simplify right side
    113,784.60x = 16,992,674,865.18
  5. Step 5: Solve for x
    x = 16,992,674,865.18/113,784.60
  6. Step 6: Final answer
    x = 149,340.73

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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.