Home / 189,435.40-284,078.86-71,042.20

Finding the Fourth Proportional to 189,435.40, 284,078.86 and 71,042.20

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Solution

The fourth proportional to 189,435.40, 284,078.86 and 71,042.20 is: 106,535.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,435.40 : 284,078.86 = 71,042.20 : x
  2. Step 2: Convert to fraction form
    189,435.40/284,078.86 = 71,042.20/x
  3. Step 3: Cross multiply
    189,435.40x = 284,078.86 × 71,042.20
  4. Step 4: Simplify right side
    189,435.40x = 20,181,587,187.89
  5. Step 5: Solve for x
    x = 20,181,587,187.89/189,435.40
  6. Step 6: Final answer
    x = 106,535.46

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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.