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Finding the Fourth Proportional to 157,903.04, 217,885.20 and 101,390.96

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Solution

The fourth proportional to 157,903.04, 217,885.20 and 101,390.96 is: 139,906.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,903.04 : 217,885.20 = 101,390.96 : x
  2. Step 2: Convert to fraction form
    157,903.04/217,885.20 = 101,390.96/x
  3. Step 3: Cross multiply
    157,903.04x = 217,885.20 × 101,390.96
  4. Step 4: Simplify right side
    157,903.04x = 22,091,589,597.79
  5. Step 5: Solve for x
    x = 22,091,589,597.79/157,903.04
  6. Step 6: Final answer
    x = 139,906.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.