Home / 131,651.52-181,678.27-71,221.92

Finding the Fourth Proportional to 131,651.52, 181,678.27 and 71,221.92

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Solution

The fourth proportional to 131,651.52, 181,678.27 and 71,221.92 is: 98,285.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,651.52 : 181,678.27 = 71,221.92 : x
  2. Step 2: Convert to fraction form
    131,651.52/181,678.27 = 71,221.92/x
  3. Step 3: Cross multiply
    131,651.52x = 181,678.27 × 71,221.92
  4. Step 4: Simplify right side
    131,651.52x = 12,939,475,211.68
  5. Step 5: Solve for x
    x = 12,939,475,211.68/131,651.52
  6. Step 6: Final answer
    x = 98,285.80

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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.