Home / 138,289.24-190,841.58-81,700.48

Finding the Fourth Proportional to 138,289.24, 190,841.58 and 81,700.48

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Solution

The fourth proportional to 138,289.24, 190,841.58 and 81,700.48 is: 112,748.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,289.24 : 190,841.58 = 81,700.48 : x
  2. Step 2: Convert to fraction form
    138,289.24/190,841.58 = 81,700.48/x
  3. Step 3: Cross multiply
    138,289.24x = 190,841.58 × 81,700.48
  4. Step 4: Simplify right side
    138,289.24x = 15,591,848,689.96
  5. Step 5: Solve for x
    x = 15,591,848,689.96/138,289.24
  6. Step 6: Final answer
    x = 112,748.10

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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.