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Finding the Fourth Proportional to 103,344.30, 154,943.55 and 47,211.30

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Solution

The fourth proportional to 103,344.30, 154,943.55 and 47,211.30 is: 70,783.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,344.30 : 154,943.55 = 47,211.30 : x
  2. Step 2: Convert to fraction form
    103,344.30/154,943.55 = 47,211.30/x
  3. Step 3: Cross multiply
    103,344.30x = 154,943.55 × 47,211.30
  4. Step 4: Simplify right side
    103,344.30x = 7,315,086,422.12
  5. Step 5: Solve for x
    x = 7,315,086,422.12/103,344.30
  6. Step 6: Final answer
    x = 70,783.65

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1.5x scale

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.