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Finding the Fourth Proportional to 125,142.93, 187,744.79 and 40,906.98

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Solution

The fourth proportional to 125,142.93, 187,744.79 and 40,906.98 is: 61,370.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,142.93 : 187,744.79 = 40,906.98 : x
  2. Step 2: Convert to fraction form
    125,142.93/187,744.79 = 40,906.98/x
  3. Step 3: Cross multiply
    125,142.93x = 187,744.79 × 40,906.98
  4. Step 4: Simplify right side
    125,142.93x = 7,680,072,369.63
  5. Step 5: Solve for x
    x = 7,680,072,369.63/125,142.93
  6. Step 6: Final answer
    x = 61,370.41

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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.