Home / 103,431.10-155,146.65-92,155.90

Finding the Fourth Proportional to 103,431.10, 155,146.65 and 92,155.90

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Solution

The fourth proportional to 103,431.10, 155,146.65 and 92,155.90 is: 138,233.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,431.10 : 155,146.65 = 92,155.90 : x
  2. Step 2: Convert to fraction form
    103,431.10/155,146.65 = 92,155.90/x
  3. Step 3: Cross multiply
    103,431.10x = 155,146.65 × 92,155.90
  4. Step 4: Simplify right side
    103,431.10x = 14,297,679,162.74
  5. Step 5: Solve for x
    x = 14,297,679,162.74/103,431.10
  6. Step 6: Final answer
    x = 138,233.85

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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.