Home / 137,582.12-189,890.55-89,243.95

Finding the Fourth Proportional to 137,582.12, 189,890.55 and 89,243.95

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Solution

The fourth proportional to 137,582.12, 189,890.55 and 89,243.95 is: 123,174.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,582.12 : 189,890.55 = 89,243.95 : x
  2. Step 2: Convert to fraction form
    137,582.12/189,890.55 = 89,243.95/x
  3. Step 3: Cross multiply
    137,582.12x = 189,890.55 × 89,243.95
  4. Step 4: Simplify right side
    137,582.12x = 16,946,582,749.67
  5. Step 5: Solve for x
    x = 16,946,582,749.67/137,582.12
  6. Step 6: Final answer
    x = 123,174.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.