Home / 145,002.54-200,105.10-80,472.72

Finding the Fourth Proportional to 145,002.54, 200,105.10 and 80,472.72

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Solution

The fourth proportional to 145,002.54, 200,105.10 and 80,472.72 is: 111,053.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,002.54 : 200,105.10 = 80,472.72 : x
  2. Step 2: Convert to fraction form
    145,002.54/200,105.10 = 80,472.72/x
  3. Step 3: Cross multiply
    145,002.54x = 200,105.10 × 80,472.72
  4. Step 4: Simplify right side
    145,002.54x = 16,103,001,682.87
  5. Step 5: Solve for x
    x = 16,103,001,682.87/145,002.54
  6. Step 6: Final answer
    x = 111,053.24

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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.