Home / 100,757.04-139,053.84-55,444.08

Finding the Fourth Proportional to 100,757.04, 139,053.84 and 55,444.08

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Solution

The fourth proportional to 100,757.04, 139,053.84 and 55,444.08 is: 76,517.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,757.04 : 139,053.84 = 55,444.08 : x
  2. Step 2: Convert to fraction form
    100,757.04/139,053.84 = 55,444.08/x
  3. Step 3: Cross multiply
    100,757.04x = 139,053.84 × 55,444.08
  4. Step 4: Simplify right side
    100,757.04x = 7,709,712,229.27
  5. Step 5: Solve for x
    x = 7,709,712,229.27/100,757.04
  6. Step 6: Final answer
    x = 76,517.85

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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.