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Finding the Fourth Proportional to 99,937.94, 137,914.38 and 53,997.57

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Solution

The fourth proportional to 99,937.94, 137,914.38 and 53,997.57 is: 74,516.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,937.94 : 137,914.38 = 53,997.57 : x
  2. Step 2: Convert to fraction form
    99,937.94/137,914.38 = 53,997.57/x
  3. Step 3: Cross multiply
    99,937.94x = 137,914.38 × 53,997.57
  4. Step 4: Simplify right side
    99,937.94x = 7,447,041,388.06
  5. Step 5: Solve for x
    x = 7,447,041,388.06/99,937.94
  6. Step 6: Final answer
    x = 74,516.66

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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.