Home / 131,832.81-197,778.59-72,638.01

Finding the Fourth Proportional to 131,832.81, 197,778.59 and 72,638.01

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Solution

The fourth proportional to 131,832.81, 197,778.59 and 72,638.01 is: 108,973.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,832.81 : 197,778.59 = 72,638.01 : x
  2. Step 2: Convert to fraction form
    131,832.81/197,778.59 = 72,638.01/x
  3. Step 3: Cross multiply
    131,832.81x = 197,778.59 × 72,638.01
  4. Step 4: Simplify right side
    131,832.81x = 14,366,243,107.41
  5. Step 5: Solve for x
    x = 14,366,243,107.41/131,832.81
  6. Step 6: Final answer
    x = 108,973.20

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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.