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Finding the Fourth Proportional to 103,438.91, 155,170.52 and 36,888.50

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Solution

The fourth proportional to 103,438.91, 155,170.52 and 36,888.50 is: 55,337.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,438.91 : 155,170.52 = 36,888.50 : x
  2. Step 2: Convert to fraction form
    103,438.91/155,170.52 = 36,888.50/x
  3. Step 3: Cross multiply
    103,438.91x = 155,170.52 × 36,888.50
  4. Step 4: Simplify right side
    103,438.91x = 5,724,006,766.72
  5. Step 5: Solve for x
    x = 5,724,006,766.72/103,438.91
  6. Step 6: Final answer
    x = 55,337.08

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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.