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Finding the Fourth Proportional to 153,241.64, 211,455.10 and 85,241.44

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Solution

The fourth proportional to 153,241.64, 211,455.10 and 85,241.44 is: 117,622.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,241.64 : 211,455.10 = 85,241.44 : x
  2. Step 2: Convert to fraction form
    153,241.64/211,455.10 = 85,241.44/x
  3. Step 3: Cross multiply
    153,241.64x = 211,455.10 × 85,241.44
  4. Step 4: Simplify right side
    153,241.64x = 18,024,735,921.30
  5. Step 5: Solve for x
    x = 18,024,735,921.30/153,241.64
  6. Step 6: Final answer
    x = 117,622.96

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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.