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Finding the Fourth Proportional to 103,310.90, 154,966.35 and 69,849.80

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Solution

The fourth proportional to 103,310.90, 154,966.35 and 69,849.80 is: 104,774.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,310.90 : 154,966.35 = 69,849.80 : x
  2. Step 2: Convert to fraction form
    103,310.90/154,966.35 = 69,849.80/x
  3. Step 3: Cross multiply
    103,310.90x = 154,966.35 × 69,849.80
  4. Step 4: Simplify right side
    103,310.90x = 10,824,368,554.23
  5. Step 5: Solve for x
    x = 10,824,368,554.23/103,310.90
  6. Step 6: Final answer
    x = 104,774.70

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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.