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Finding the Fourth Proportional to 128,994.16, 193,492.32 and 35,505.04

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Solution

The fourth proportional to 128,994.16, 193,492.32 and 35,505.04 is: 53,257.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,994.16 : 193,492.32 = 35,505.04 : x
  2. Step 2: Convert to fraction form
    128,994.16/193,492.32 = 35,505.04/x
  3. Step 3: Cross multiply
    128,994.16x = 193,492.32 × 35,505.04
  4. Step 4: Simplify right side
    128,994.16x = 6,869,952,561.29
  5. Step 5: Solve for x
    x = 6,869,952,561.29/128,994.16
  6. Step 6: Final answer
    x = 53,257.86

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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.