Home / 260,485.81-390,775.19-92,103.90

Finding the Fourth Proportional to 260,485.81, 390,775.19 and 92,103.90

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Solution

The fourth proportional to 260,485.81, 390,775.19 and 92,103.90 is: 138,172.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,485.81 : 390,775.19 = 92,103.90 : x
  2. Step 2: Convert to fraction form
    260,485.81/390,775.19 = 92,103.90/x
  3. Step 3: Cross multiply
    260,485.81x = 390,775.19 × 92,103.90
  4. Step 4: Simplify right side
    260,485.81x = 35,991,917,096.31
  5. Step 5: Solve for x
    x = 35,991,917,096.31/260,485.81
  6. Step 6: Final answer
    x = 138,172.28

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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.