Home / 103,039.36-154,557.96-28,159.45

Finding the Fourth Proportional to 103,039.36, 154,557.96 and 28,159.45

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Solution

The fourth proportional to 103,039.36, 154,557.96 and 28,159.45 is: 42,238.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,039.36 : 154,557.96 = 28,159.45 : x
  2. Step 2: Convert to fraction form
    103,039.36/154,557.96 = 28,159.45/x
  3. Step 3: Cross multiply
    103,039.36x = 154,557.96 × 28,159.45
  4. Step 4: Simplify right side
    103,039.36x = 4,352,267,146.72
  5. Step 5: Solve for x
    x = 4,352,267,146.72/103,039.36
  6. Step 6: Final answer
    x = 42,238.88

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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.