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Finding the Fourth Proportional to 134,428.60, 201,788.70 and 75,379.60

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Solution

The fourth proportional to 134,428.60, 201,788.70 and 75,379.60 is: 113,151.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,428.60 : 201,788.70 = 75,379.60 : x
  2. Step 2: Convert to fraction form
    134,428.60/201,788.70 = 75,379.60/x
  3. Step 3: Cross multiply
    134,428.60x = 201,788.70 × 75,379.60
  4. Step 4: Simplify right side
    134,428.60x = 15,210,751,490.52
  5. Step 5: Solve for x
    x = 15,210,751,490.52/134,428.60
  6. Step 6: Final answer
    x = 113,151.16

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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.