Home / 100,622.28-138,852.04-55,299.32

Finding the Fourth Proportional to 100,622.28, 138,852.04 and 55,299.32

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Solution

The fourth proportional to 100,622.28, 138,852.04 and 55,299.32 is: 76,309.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,622.28 : 138,852.04 = 55,299.32 : x
  2. Step 2: Convert to fraction form
    100,622.28/138,852.04 = 55,299.32/x
  3. Step 3: Cross multiply
    100,622.28x = 138,852.04 × 55,299.32
  4. Step 4: Simplify right side
    100,622.28x = 7,678,423,392.61
  5. Step 5: Solve for x
    x = 7,678,423,392.61/100,622.28
  6. Step 6: Final answer
    x = 76,309.38

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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.