Home / 87,142.13-120,293.35-73,783.20

Finding the Fourth Proportional to 87,142.13, 120,293.35 and 73,783.20

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Solution

The fourth proportional to 87,142.13, 120,293.35 and 73,783.20 is: 101,852.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,142.13 : 120,293.35 = 73,783.20 : x
  2. Step 2: Convert to fraction form
    87,142.13/120,293.35 = 73,783.20/x
  3. Step 3: Cross multiply
    87,142.13x = 120,293.35 × 73,783.20
  4. Step 4: Simplify right side
    87,142.13x = 8,875,628,983.39
  5. Step 5: Solve for x
    x = 8,875,628,983.39/87,142.13
  6. Step 6: Final answer
    x = 101,852.33

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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.