Home / 138,217.30-190,798.72-92,921.56

Finding the Fourth Proportional to 138,217.30, 190,798.72 and 92,921.56

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Solution

The fourth proportional to 138,217.30, 190,798.72 and 92,921.56 is: 128,271.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,217.30 : 190,798.72 = 92,921.56 : x
  2. Step 2: Convert to fraction form
    138,217.30/190,798.72 = 92,921.56/x
  3. Step 3: Cross multiply
    138,217.30x = 190,798.72 × 92,921.56
  4. Step 4: Simplify right side
    138,217.30x = 17,729,315,595.03
  5. Step 5: Solve for x
    x = 17,729,315,595.03/138,217.30
  6. Step 6: Final answer
    x = 128,271.32

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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.