Home / 100,853.80-139,181.62-55,536.52

Finding the Fourth Proportional to 100,853.80, 139,181.62 and 55,536.52

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Solution

The fourth proportional to 100,853.80, 139,181.62 and 55,536.52 is: 76,642.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,853.80 : 139,181.62 = 55,536.52 : x
  2. Step 2: Convert to fraction form
    100,853.80/139,181.62 = 55,536.52/x
  3. Step 3: Cross multiply
    100,853.80x = 139,181.62 × 55,536.52
  4. Step 4: Simplify right side
    100,853.80x = 7,729,662,822.76
  5. Step 5: Solve for x
    x = 7,729,662,822.76/100,853.80
  6. Step 6: Final answer
    x = 76,642.26

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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.