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Finding the Fourth Proportional to 128,976.10, 193,464.15 and 97,483.30

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Solution

The fourth proportional to 128,976.10, 193,464.15 and 97,483.30 is: 146,224.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,976.10 : 193,464.15 = 97,483.30 : x
  2. Step 2: Convert to fraction form
    128,976.10/193,464.15 = 97,483.30/x
  3. Step 3: Cross multiply
    128,976.10x = 193,464.15 × 97,483.30
  4. Step 4: Simplify right side
    128,976.10x = 18,859,523,773.70
  5. Step 5: Solve for x
    x = 18,859,523,773.70/128,976.10
  6. Step 6: Final answer
    x = 146,224.95

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1.5x scale

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.