Home / 100,843.04-139,125.92-100,687.52

Finding the Fourth Proportional to 100,843.04, 139,125.92 and 100,687.52

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Solution

The fourth proportional to 100,843.04, 139,125.92 and 100,687.52 is: 138,911.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,843.04 : 139,125.92 = 100,687.52 : x
  2. Step 2: Convert to fraction form
    100,843.04/139,125.92 = 100,687.52/x
  3. Step 3: Cross multiply
    100,843.04x = 139,125.92 × 100,687.52
  4. Step 4: Simplify right side
    100,843.04x = 14,008,243,852.52
  5. Step 5: Solve for x
    x = 14,008,243,852.52/100,843.04
  6. Step 6: Final answer
    x = 138,911.36

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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.