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Finding the Fourth Proportional to 103,426.55, 155,158.05 and 36,905.30

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Solution

The fourth proportional to 103,426.55, 155,158.05 and 36,905.30 is: 55,364.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,426.55 : 155,158.05 = 36,905.30 : x
  2. Step 2: Convert to fraction form
    103,426.55/155,158.05 = 36,905.30/x
  3. Step 3: Cross multiply
    103,426.55x = 155,158.05 × 36,905.30
  4. Step 4: Simplify right side
    103,426.55x = 5,726,154,382.67
  5. Step 5: Solve for x
    x = 5,726,154,382.67/103,426.55
  6. Step 6: Final answer
    x = 55,364.45

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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.