Home / 100,837.04-139,149.70-55,506.20

Finding the Fourth Proportional to 100,837.04, 139,149.70 and 55,506.20

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Solution

The fourth proportional to 100,837.04, 139,149.70 and 55,506.20 is: 76,595.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,837.04 : 139,149.70 = 55,506.20 : x
  2. Step 2: Convert to fraction form
    100,837.04/139,149.70 = 55,506.20/x
  3. Step 3: Cross multiply
    100,837.04x = 139,149.70 × 55,506.20
  4. Step 4: Simplify right side
    100,837.04x = 7,723,671,078.14
  5. Step 5: Solve for x
    x = 7,723,671,078.14/100,837.04
  6. Step 6: Final answer
    x = 76,595.58

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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.