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Finding the Fourth Proportional to 145,620.96, 218,516.32 and 61,375.96

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Solution

The fourth proportional to 145,620.96, 218,516.32 and 61,375.96 is: 92,099.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,620.96 : 218,516.32 = 61,375.96 : x
  2. Step 2: Convert to fraction form
    145,620.96/218,516.32 = 61,375.96/x
  3. Step 3: Cross multiply
    145,620.96x = 218,516.32 × 61,375.96
  4. Step 4: Simplify right side
    145,620.96x = 13,411,648,915.67
  5. Step 5: Solve for x
    x = 13,411,648,915.67/145,620.96
  6. Step 6: Final answer
    x = 92,099.72

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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.