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Finding the Fourth Proportional to 100,397.78, 150,596.43 and 55,416.98

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Solution

The fourth proportional to 100,397.78, 150,596.43 and 55,416.98 is: 83,125.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,397.78 : 150,596.43 = 55,416.98 : x
  2. Step 2: Convert to fraction form
    100,397.78/150,596.43 = 55,416.98/x
  3. Step 3: Cross multiply
    100,397.78x = 150,596.43 × 55,416.98
  4. Step 4: Simplify right side
    100,397.78x = 8,345,599,349.38
  5. Step 5: Solve for x
    x = 8,345,599,349.38/100,397.78
  6. Step 6: Final answer
    x = 83,125.34

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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.