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Finding the Fourth Proportional to 143,702.37, 215,553.56 and 66,757.64

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Solution

The fourth proportional to 143,702.37, 215,553.56 and 66,757.64 is: 100,136.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,702.37 : 215,553.56 = 66,757.64 : x
  2. Step 2: Convert to fraction form
    143,702.37/215,553.56 = 66,757.64/x
  3. Step 3: Cross multiply
    143,702.37x = 215,553.56 × 66,757.64
  4. Step 4: Simplify right side
    143,702.37x = 14,389,845,547.64
  5. Step 5: Solve for x
    x = 14,389,845,547.64/143,702.37
  6. Step 6: Final answer
    x = 100,136.45

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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.