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Finding the Fourth Proportional to 103,475.34, 155,154.42 and 61,361.28

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Solution

The fourth proportional to 103,475.34, 155,154.42 and 61,361.28 is: 92,007.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,475.34 : 155,154.42 = 61,361.28 : x
  2. Step 2: Convert to fraction form
    103,475.34/155,154.42 = 61,361.28/x
  3. Step 3: Cross multiply
    103,475.34x = 155,154.42 × 61,361.28
  4. Step 4: Simplify right side
    103,475.34x = 9,520,473,808.86
  5. Step 5: Solve for x
    x = 9,520,473,808.86/103,475.34
  6. Step 6: Final answer
    x = 92,007.18

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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.