Home / 260,051.02-390,189.22-91,691.60

Finding the Fourth Proportional to 260,051.02, 390,189.22 and 91,691.60

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Solution

The fourth proportional to 260,051.02, 390,189.22 and 91,691.60 is: 137,577.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,051.02 : 390,189.22 = 91,691.60 : x
  2. Step 2: Convert to fraction form
    260,051.02/390,189.22 = 91,691.60/x
  3. Step 3: Cross multiply
    260,051.02x = 390,189.22 × 91,691.60
  4. Step 4: Simplify right side
    260,051.02x = 35,777,073,884.55
  5. Step 5: Solve for x
    x = 35,777,073,884.55/260,051.02
  6. Step 6: Final answer
    x = 137,577.13

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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.