Home / 128,848.20-193,790.70-115,369.80

Finding the Fourth Proportional to 128,848.20, 193,790.70 and 115,369.80

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Solution

The fourth proportional to 128,848.20, 193,790.70 and 115,369.80 is: 173,518.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,848.20 : 193,790.70 = 115,369.80 : x
  2. Step 2: Convert to fraction form
    128,848.20/193,790.70 = 115,369.80/x
  3. Step 3: Cross multiply
    128,848.20x = 193,790.70 × 115,369.80
  4. Step 4: Simplify right side
    128,848.20x = 22,357,594,300.86
  5. Step 5: Solve for x
    x = 22,357,594,300.86/128,848.20
  6. Step 6: Final answer
    x = 173,518.87

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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.