Home / 128,749.20-193,178.48-62,155.05

Finding the Fourth Proportional to 128,749.20, 193,178.48 and 62,155.05

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Solution

The fourth proportional to 128,749.20, 193,178.48 and 62,155.05 is: 93,258.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,749.20 : 193,178.48 = 62,155.05 : x
  2. Step 2: Convert to fraction form
    128,749.20/193,178.48 = 62,155.05/x
  3. Step 3: Cross multiply
    128,749.20x = 193,178.48 × 62,155.05
  4. Step 4: Simplify right side
    128,749.20x = 12,007,017,772.55
  5. Step 5: Solve for x
    x = 12,007,017,772.55/128,749.20
  6. Step 6: Final answer
    x = 93,258.97

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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.