Home / 80,908.98-121,203.30-38,155.86

Finding the Fourth Proportional to 80,908.98, 121,203.30 and 38,155.86

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Solution

The fourth proportional to 80,908.98, 121,203.30 and 38,155.86 is: 57,158.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,908.98 : 121,203.30 = 38,155.86 : x
  2. Step 2: Convert to fraction form
    80,908.98/121,203.30 = 38,155.86/x
  3. Step 3: Cross multiply
    80,908.98x = 121,203.30 × 38,155.86
  4. Step 4: Simplify right side
    80,908.98x = 4,624,616,146.34
  5. Step 5: Solve for x
    x = 4,624,616,146.34/80,908.98
  6. Step 6: Final answer
    x = 57,158.26

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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.