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Finding the Fourth Proportional to 143,700.64, 215,384.64 and 67,847.28

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Solution

The fourth proportional to 143,700.64, 215,384.64 and 67,847.28 is: 101,692.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,700.64 : 215,384.64 = 67,847.28 : x
  2. Step 2: Convert to fraction form
    143,700.64/215,384.64 = 67,847.28/x
  3. Step 3: Cross multiply
    143,700.64x = 215,384.64 × 67,847.28
  4. Step 4: Simplify right side
    143,700.64x = 14,613,260,915.66
  5. Step 5: Solve for x
    x = 14,613,260,915.66/143,700.64
  6. Step 6: Final answer
    x = 101,692.39

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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.