Home / 103,534.23-155,304.78-28,648.11

Finding the Fourth Proportional to 103,534.23, 155,304.78 and 28,648.11

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Solution

The fourth proportional to 103,534.23, 155,304.78 and 28,648.11 is: 42,973.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,534.23 : 155,304.78 = 28,648.11 : x
  2. Step 2: Convert to fraction form
    103,534.23/155,304.78 = 28,648.11/x
  3. Step 3: Cross multiply
    103,534.23x = 155,304.78 × 28,648.11
  4. Step 4: Simplify right side
    103,534.23x = 4,449,188,420.97
  5. Step 5: Solve for x
    x = 4,449,188,420.97/103,534.23
  6. Step 6: Final answer
    x = 42,973.12

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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.