Home / 100,966.26-139,332.84-55,644.28

Finding the Fourth Proportional to 100,966.26, 139,332.84 and 55,644.28

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Solution

The fourth proportional to 100,966.26, 139,332.84 and 55,644.28 is: 76,788.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,966.26 : 139,332.84 = 55,644.28 : x
  2. Step 2: Convert to fraction form
    100,966.26/139,332.84 = 55,644.28/x
  3. Step 3: Cross multiply
    100,966.26x = 139,332.84 × 55,644.28
  4. Step 4: Simplify right side
    100,966.26x = 7,753,074,587.27
  5. Step 5: Solve for x
    x = 7,753,074,587.27/100,966.26
  6. Step 6: Final answer
    x = 76,788.77

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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.