Home / 138,071.24-190,534.46-83,655.63

Finding the Fourth Proportional to 138,071.24, 190,534.46 and 83,655.63

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Solution

The fourth proportional to 138,071.24, 190,534.46 and 83,655.63 is: 115,442.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,071.24 : 190,534.46 = 83,655.63 : x
  2. Step 2: Convert to fraction form
    138,071.24/190,534.46 = 83,655.63/x
  3. Step 3: Cross multiply
    138,071.24x = 190,534.46 × 83,655.63
  4. Step 4: Simplify right side
    138,071.24x = 15,939,280,331.30
  5. Step 5: Solve for x
    x = 15,939,280,331.30/138,071.24
  6. Step 6: Final answer
    x = 115,442.43

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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.