Home / 103,187.08-154,780.64-82,541.80

Finding the Fourth Proportional to 103,187.08, 154,780.64 and 82,541.80

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Solution

The fourth proportional to 103,187.08, 154,780.64 and 82,541.80 is: 123,812.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,187.08 : 154,780.64 = 82,541.80 : x
  2. Step 2: Convert to fraction form
    103,187.08/154,780.64 = 82,541.80/x
  3. Step 3: Cross multiply
    103,187.08x = 154,780.64 × 82,541.80
  4. Step 4: Simplify right side
    103,187.08x = 12,775,872,630.75
  5. Step 5: Solve for x
    x = 12,775,872,630.75/103,187.08
  6. Step 6: Final answer
    x = 123,812.72

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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.