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Finding the Fourth Proportional to 131,689.99, 181,732.66 and 71,260.63

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Solution

The fourth proportional to 131,689.99, 181,732.66 and 71,260.63 is: 98,339.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,689.99 : 181,732.66 = 71,260.63 : x
  2. Step 2: Convert to fraction form
    131,689.99/181,732.66 = 71,260.63/x
  3. Step 3: Cross multiply
    131,689.99x = 181,732.66 × 71,260.63
  4. Step 4: Simplify right side
    131,689.99x = 12,950,383,388.84
  5. Step 5: Solve for x
    x = 12,950,383,388.84/131,689.99
  6. Step 6: Final answer
    x = 98,339.93

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1.5x scale

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.