Home / 189,330.72-284,142.96-71,109.60

Finding the Fourth Proportional to 189,330.72, 284,142.96 and 71,109.60

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Solution

The fourth proportional to 189,330.72, 284,142.96 and 71,109.60 is: 106,719.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,330.72 : 284,142.96 = 71,109.60 : x
  2. Step 2: Convert to fraction form
    189,330.72/284,142.96 = 71,109.60/x
  3. Step 3: Cross multiply
    189,330.72x = 284,142.96 × 71,109.60
  4. Step 4: Simplify right side
    189,330.72x = 20,205,292,228.42
  5. Step 5: Solve for x
    x = 20,205,292,228.42/189,330.72
  6. Step 6: Final answer
    x = 106,719.57

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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.