Home / 124,879.77-172,281.83-81,869.58

Finding the Fourth Proportional to 124,879.77, 172,281.83 and 81,869.58

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Solution

The fourth proportional to 124,879.77, 172,281.83 and 81,869.58 is: 112,945.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,879.77 : 172,281.83 = 81,869.58 : x
  2. Step 2: Convert to fraction form
    124,879.77/172,281.83 = 81,869.58/x
  3. Step 3: Cross multiply
    124,879.77x = 172,281.83 × 81,869.58
  4. Step 4: Simplify right side
    124,879.77x = 14,104,640,654.38
  5. Step 5: Solve for x
    x = 14,104,640,654.38/124,879.77
  6. Step 6: Final answer
    x = 112,945.76

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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.