Home / 138,498.10-191,450.25-123,539.02

Finding the Fourth Proportional to 138,498.10, 191,450.25 and 123,539.02

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Solution

The fourth proportional to 138,498.10, 191,450.25 and 123,539.02 is: 170,771.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,498.10 : 191,450.25 = 123,539.02 : x
  2. Step 2: Convert to fraction form
    138,498.10/191,450.25 = 123,539.02/x
  3. Step 3: Cross multiply
    138,498.10x = 191,450.25 × 123,539.02
  4. Step 4: Simplify right side
    138,498.10x = 23,651,576,263.76
  5. Step 5: Solve for x
    x = 23,651,576,263.76/138,498.10
  6. Step 6: Final answer
    x = 170,771.85

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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.