Home / 100,448.23-150,672.35-78,278.20

Finding the Fourth Proportional to 100,448.23, 150,672.35 and 78,278.20

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Solution

The fourth proportional to 100,448.23, 150,672.35 and 78,278.20 is: 117,417.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,448.23 : 150,672.35 = 78,278.20 : x
  2. Step 2: Convert to fraction form
    100,448.23/150,672.35 = 78,278.20/x
  3. Step 3: Cross multiply
    100,448.23x = 150,672.35 × 78,278.20
  4. Step 4: Simplify right side
    100,448.23x = 11,794,359,203.02
  5. Step 5: Solve for x
    x = 11,794,359,203.02/100,448.23
  6. Step 6: Final answer
    x = 117,417.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.