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Finding the Fourth Proportional to 199,937.60, 300,021.60 and 75,291.20

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Solution

The fourth proportional to 199,937.60, 300,021.60 and 75,291.20 is: 112,980.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,937.60 : 300,021.60 = 75,291.20 : x
  2. Step 2: Convert to fraction form
    199,937.60/300,021.60 = 75,291.20/x
  3. Step 3: Cross multiply
    199,937.60x = 300,021.60 × 75,291.20
  4. Step 4: Simplify right side
    199,937.60x = 22,588,986,289.92
  5. Step 5: Solve for x
    x = 22,588,986,289.92/199,937.60
  6. Step 6: Final answer
    x = 112,980.18

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1.5x scale

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.