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Finding the Fourth Proportional to 145,650.94, 218,561.33 and 61,405.94

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Solution

The fourth proportional to 145,650.94, 218,561.33 and 61,405.94 is: 92,144.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,650.94 : 218,561.33 = 61,405.94 : x
  2. Step 2: Convert to fraction form
    145,650.94/218,561.33 = 61,405.94/x
  3. Step 3: Cross multiply
    145,650.94x = 218,561.33 × 61,405.94
  4. Step 4: Simplify right side
    145,650.94x = 13,420,963,916.30
  5. Step 5: Solve for x
    x = 13,420,963,916.30/145,650.94
  6. Step 6: Final answer
    x = 92,144.71

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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.