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Finding the Fourth Proportional to 143,497.44, 198,008.64 and 79,830.72

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Solution

The fourth proportional to 143,497.44, 198,008.64 and 79,830.72 is: 110,156.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,497.44 : 198,008.64 = 79,830.72 : x
  2. Step 2: Convert to fraction form
    143,497.44/198,008.64 = 79,830.72/x
  3. Step 3: Cross multiply
    143,497.44x = 198,008.64 × 79,830.72
  4. Step 4: Simplify right side
    143,497.44x = 15,807,172,297.42
  5. Step 5: Solve for x
    x = 15,807,172,297.42/143,497.44
  6. Step 6: Final answer
    x = 110,156.48

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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.