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Finding the Fourth Proportional to 157,241.40, 216,995.72 and 85,622.82

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Solution

The fourth proportional to 157,241.40, 216,995.72 and 85,622.82 is: 118,160.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,241.40 : 216,995.72 = 85,622.82 : x
  2. Step 2: Convert to fraction form
    157,241.40/216,995.72 = 85,622.82/x
  3. Step 3: Cross multiply
    157,241.40x = 216,995.72 × 85,622.82
  4. Step 4: Simplify right side
    157,241.40x = 18,579,784,796.22
  5. Step 5: Solve for x
    x = 18,579,784,796.22/157,241.40
  6. Step 6: Final answer
    x = 118,160.90

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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.