Home / 103,640.10-155,241.45-92,559.30

Finding the Fourth Proportional to 103,640.10, 155,241.45 and 92,559.30

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Solution

The fourth proportional to 103,640.10, 155,241.45 and 92,559.30 is: 138,643.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.10 : 155,241.45 = 92,559.30 : x
  2. Step 2: Convert to fraction form
    103,640.10/155,241.45 = 92,559.30/x
  3. Step 3: Cross multiply
    103,640.10x = 155,241.45 × 92,559.30
  4. Step 4: Simplify right side
    103,640.10x = 14,369,039,942.99
  5. Step 5: Solve for x
    x = 14,369,039,942.99/103,640.10
  6. Step 6: Final answer
    x = 138,643.63

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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.