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Finding the Fourth Proportional to 176,321.70, 243,328.77 and 103,729.70

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Solution

The fourth proportional to 176,321.70, 243,328.77 and 103,729.70 is: 143,149.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,321.70 : 243,328.77 = 103,729.70 : x
  2. Step 2: Convert to fraction form
    176,321.70/243,328.77 = 103,729.70/x
  3. Step 3: Cross multiply
    176,321.70x = 243,328.77 × 103,729.70
  4. Step 4: Simplify right side
    176,321.70x = 25,240,420,921.79
  5. Step 5: Solve for x
    x = 25,240,420,921.79/176,321.70
  6. Step 6: Final answer
    x = 143,149.83

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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.