Home / 75,430.20-113,145.30-67,265.40

Finding the Fourth Proportional to 75,430.20, 113,145.30 and 67,265.40

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Solution

The fourth proportional to 75,430.20, 113,145.30 and 67,265.40 is: 100,898.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,430.20 : 113,145.30 = 67,265.40 : x
  2. Step 2: Convert to fraction form
    75,430.20/113,145.30 = 67,265.40/x
  3. Step 3: Cross multiply
    75,430.20x = 113,145.30 × 67,265.40
  4. Step 4: Simplify right side
    75,430.20x = 7,610,763,862.62
  5. Step 5: Solve for x
    x = 7,610,763,862.62/75,430.20
  6. Step 6: Final answer
    x = 100,898.10

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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.