Home / 131,198.72-181,041.12-76,742.88

Finding the Fourth Proportional to 131,198.72, 181,041.12 and 76,742.88

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Solution

The fourth proportional to 131,198.72, 181,041.12 and 76,742.88 is: 105,897.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,198.72 : 181,041.12 = 76,742.88 : x
  2. Step 2: Convert to fraction form
    131,198.72/181,041.12 = 76,742.88/x
  3. Step 3: Cross multiply
    131,198.72x = 181,041.12 × 76,742.88
  4. Step 4: Simplify right side
    131,198.72x = 13,893,616,947.23
  5. Step 5: Solve for x
    x = 13,893,616,947.23/131,198.72
  6. Step 6: Final answer
    x = 105,897.50

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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.