Home / 205,081.88-282,979.02-136,989.62

Finding the Fourth Proportional to 205,081.88, 282,979.02 and 136,989.62

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Solution

The fourth proportional to 205,081.88, 282,979.02 and 136,989.62 is: 189,022.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,081.88 : 282,979.02 = 136,989.62 : x
  2. Step 2: Convert to fraction form
    205,081.88/282,979.02 = 136,989.62/x
  3. Step 3: Cross multiply
    205,081.88x = 282,979.02 × 136,989.62
  4. Step 4: Simplify right side
    205,081.88x = 38,765,188,417.77
  5. Step 5: Solve for x
    x = 38,765,188,417.77/205,081.88
  6. Step 6: Final answer
    x = 189,022.98

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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.