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Finding the Fourth Proportional to 105,015.62, 157,618.12 and 71,199.84

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Solution

The fourth proportional to 105,015.62, 157,618.12 and 71,199.84 is: 106,863.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,015.62 : 157,618.12 = 71,199.84 : x
  2. Step 2: Convert to fraction form
    105,015.62/157,618.12 = 71,199.84/x
  3. Step 3: Cross multiply
    105,015.62x = 157,618.12 × 71,199.84
  4. Step 4: Simplify right side
    105,015.62x = 11,222,384,925.10
  5. Step 5: Solve for x
    x = 11,222,384,925.10/105,015.62
  6. Step 6: Final answer
    x = 106,863.96

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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.