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Finding the Fourth Proportional to 147,391.48, 203,400.42 and 80,323.48

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Solution

The fourth proportional to 147,391.48, 203,400.42 and 80,323.48 is: 110,846.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,391.48 : 203,400.42 = 80,323.48 : x
  2. Step 2: Convert to fraction form
    147,391.48/203,400.42 = 80,323.48/x
  3. Step 3: Cross multiply
    147,391.48x = 203,400.42 × 80,323.48
  4. Step 4: Simplify right side
    147,391.48x = 16,337,829,567.86
  5. Step 5: Solve for x
    x = 16,337,829,567.86/147,391.48
  6. Step 6: Final answer
    x = 110,846.50

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1.5x scale

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.