Home / 131,658.09-181,687.69-71,228.76

Finding the Fourth Proportional to 131,658.09, 181,687.69 and 71,228.76

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Solution

The fourth proportional to 131,658.09, 181,687.69 and 71,228.76 is: 98,295.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,658.09 : 181,687.69 = 71,228.76 : x
  2. Step 2: Convert to fraction form
    131,658.09/181,687.69 = 71,228.76/x
  3. Step 3: Cross multiply
    131,658.09x = 181,687.69 × 71,228.76
  4. Step 4: Simplify right side
    131,658.09x = 12,941,388,784.67
  5. Step 5: Solve for x
    x = 12,941,388,784.67/131,658.09
  6. Step 6: Final answer
    x = 98,295.43

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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.