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Finding the Fourth Proportional to 103,856.30, 155,776.35 and 40,664.15

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Solution

The fourth proportional to 103,856.30, 155,776.35 and 40,664.15 is: 60,993.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,856.30 : 155,776.35 = 40,664.15 : x
  2. Step 2: Convert to fraction form
    103,856.30/155,776.35 = 40,664.15/x
  3. Step 3: Cross multiply
    103,856.30x = 155,776.35 × 40,664.15
  4. Step 4: Simplify right side
    103,856.30x = 6,334,512,862.85
  5. Step 5: Solve for x
    x = 6,334,512,862.85/103,856.30
  6. Step 6: Final answer
    x = 60,993.05

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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.