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Finding the Fourth Proportional to 129,020.40, 193,465.80 and 58,820.40

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Solution

The fourth proportional to 129,020.40, 193,465.80 and 58,820.40 is: 88,201.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,020.40 : 193,465.80 = 58,820.40 : x
  2. Step 2: Convert to fraction form
    129,020.40/193,465.80 = 58,820.40/x
  3. Step 3: Cross multiply
    129,020.40x = 193,465.80 × 58,820.40
  4. Step 4: Simplify right side
    129,020.40x = 11,379,735,742.32
  5. Step 5: Solve for x
    x = 11,379,735,742.32/129,020.40
  6. Step 6: Final answer
    x = 88,201.06

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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.