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Finding the Fourth Proportional to 188,612.96, 260,286.60 and 103,735.36

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Solution

The fourth proportional to 188,612.96, 260,286.60 and 103,735.36 is: 143,155.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,612.96 : 260,286.60 = 103,735.36 : x
  2. Step 2: Convert to fraction form
    188,612.96/260,286.60 = 103,735.36/x
  3. Step 3: Cross multiply
    188,612.96x = 260,286.60 × 103,735.36
  4. Step 4: Simplify right side
    188,612.96x = 27,000,924,154.18
  5. Step 5: Solve for x
    x = 27,000,924,154.18/188,612.96
  6. Step 6: Final answer
    x = 143,155.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.