Home / 204,030.55-306,146.40-91,790.20

Finding the Fourth Proportional to 204,030.55, 306,146.40 and 91,790.20

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Solution

The fourth proportional to 204,030.55, 306,146.40 and 91,790.20 is: 137,730.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,030.55 : 306,146.40 = 91,790.20 : x
  2. Step 2: Convert to fraction form
    204,030.55/306,146.40 = 91,790.20/x
  3. Step 3: Cross multiply
    204,030.55x = 306,146.40 × 91,790.20
  4. Step 4: Simplify right side
    204,030.55x = 28,101,239,285.28
  5. Step 5: Solve for x
    x = 28,101,239,285.28/204,030.55
  6. Step 6: Final answer
    x = 137,730.55

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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.