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Finding the Fourth Proportional to 103,438.53, 155,169.95 and 36,888.12

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Solution

The fourth proportional to 103,438.53, 155,169.95 and 36,888.12 is: 55,336.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,438.53 : 155,169.95 = 36,888.12 : x
  2. Step 2: Convert to fraction form
    103,438.53/155,169.95 = 36,888.12/x
  3. Step 3: Cross multiply
    103,438.53x = 155,169.95 × 36,888.12
  4. Step 4: Simplify right side
    103,438.53x = 5,723,927,551.55
  5. Step 5: Solve for x
    x = 5,723,927,551.55/103,438.53
  6. Step 6: Final answer
    x = 55,336.51

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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.