Home / 103,345.13-155,018.54-28,469.41

Finding the Fourth Proportional to 103,345.13, 155,018.54 and 28,469.41

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Solution

The fourth proportional to 103,345.13, 155,018.54 and 28,469.41 is: 42,704.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,345.13 : 155,018.54 = 28,469.41 : x
  2. Step 2: Convert to fraction form
    103,345.13/155,018.54 = 28,469.41/x
  3. Step 3: Cross multiply
    103,345.13x = 155,018.54 × 28,469.41
  4. Step 4: Simplify right side
    103,345.13x = 4,413,286,372.86
  5. Step 5: Solve for x
    x = 4,413,286,372.86/103,345.13
  6. Step 6: Final answer
    x = 42,704.35

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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.