Home / 100,757.33-139,045.11-55,434.35

Finding the Fourth Proportional to 100,757.33, 139,045.11 and 55,434.35

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Solution

The fourth proportional to 100,757.33, 139,045.11 and 55,434.35 is: 76,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,757.33 : 139,045.11 = 55,434.35 : x
  2. Step 2: Convert to fraction form
    100,757.33/139,045.11 = 55,434.35/x
  3. Step 3: Cross multiply
    100,757.33x = 139,045.11 × 55,434.35
  4. Step 4: Simplify right side
    100,757.33x = 7,707,875,293.53
  5. Step 5: Solve for x
    x = 7,707,875,293.53/100,757.33
  6. Step 6: Final answer
    x = 76,499.40

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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.