Home / 138,217.47-190,798.95-92,921.72

Finding the Fourth Proportional to 138,217.47, 190,798.95 and 92,921.72

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Solution

The fourth proportional to 138,217.47, 190,798.95 and 92,921.72 is: 128,271.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,217.47 : 190,798.95 = 92,921.72 : x
  2. Step 2: Convert to fraction form
    138,217.47/190,798.95 = 92,921.72/x
  3. Step 3: Cross multiply
    138,217.47x = 190,798.95 × 92,921.72
  4. Step 4: Simplify right side
    138,217.47x = 17,729,365,654.20
  5. Step 5: Solve for x
    x = 17,729,365,654.20/138,217.47
  6. Step 6: Final answer
    x = 128,271.52

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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.