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Finding the Fourth Proportional to 126,798.80, 190,127.08 and 86,862.92

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Solution

The fourth proportional to 126,798.80, 190,127.08 and 86,862.92 is: 130,245.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,798.80 : 190,127.08 = 86,862.92 : x
  2. Step 2: Convert to fraction form
    126,798.80/190,127.08 = 86,862.92/x
  3. Step 3: Cross multiply
    126,798.80x = 190,127.08 × 86,862.92
  4. Step 4: Simplify right side
    126,798.80x = 16,514,993,339.87
  5. Step 5: Solve for x
    x = 16,514,993,339.87/126,798.80
  6. Step 6: Final answer
    x = 130,245.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.