Home / 100,853.43-139,176.59-55,530.47

Finding the Fourth Proportional to 100,853.43, 139,176.59 and 55,530.47

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Solution

The fourth proportional to 100,853.43, 139,176.59 and 55,530.47 is: 76,631.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,853.43 : 139,176.59 = 55,530.47 : x
  2. Step 2: Convert to fraction form
    100,853.43/139,176.59 = 55,530.47/x
  3. Step 3: Cross multiply
    100,853.43x = 139,176.59 × 55,530.47
  4. Step 4: Simplify right side
    100,853.43x = 7,728,540,482.16
  5. Step 5: Solve for x
    x = 7,728,540,482.16/100,853.43
  6. Step 6: Final answer
    x = 76,631.41

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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.