Home / 100,864.33-139,191.55-55,541.39

Finding the Fourth Proportional to 100,864.33, 139,191.55 and 55,541.39

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Solution

The fourth proportional to 100,864.33, 139,191.55 and 55,541.39 is: 76,646.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,864.33 : 139,191.55 = 55,541.39 : x
  2. Step 2: Convert to fraction form
    100,864.33/139,191.55 = 55,541.39/x
  3. Step 3: Cross multiply
    100,864.33x = 139,191.55 × 55,541.39
  4. Step 4: Simplify right side
    100,864.33x = 7,730,891,328.44
  5. Step 5: Solve for x
    x = 7,730,891,328.44/100,864.33
  6. Step 6: Final answer
    x = 76,646.44

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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.