Home / 100,928.22-139,282.20-55,606.08

Finding the Fourth Proportional to 100,928.22, 139,282.20 and 55,606.08

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Solution

The fourth proportional to 100,928.22, 139,282.20 and 55,606.08 is: 76,737.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,928.22 : 139,282.20 = 55,606.08 : x
  2. Step 2: Convert to fraction form
    100,928.22/139,282.20 = 55,606.08/x
  3. Step 3: Cross multiply
    100,928.22x = 139,282.20 × 55,606.08
  4. Step 4: Simplify right side
    100,928.22x = 7,744,937,155.78
  5. Step 5: Solve for x
    x = 7,744,937,155.78/100,928.22
  6. Step 6: Final answer
    x = 76,737.08

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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.