Home / 87,142.63-120,294.05-73,783.71

Finding the Fourth Proportional to 87,142.63, 120,294.05 and 73,783.71

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Solution

The fourth proportional to 87,142.63, 120,294.05 and 73,783.71 is: 101,853.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,142.63 : 120,294.05 = 73,783.71 : x
  2. Step 2: Convert to fraction form
    87,142.63/120,294.05 = 73,783.71/x
  3. Step 3: Cross multiply
    87,142.63x = 120,294.05 × 73,783.71
  4. Step 4: Simplify right side
    87,142.63x = 8,875,740,329.54
  5. Step 5: Solve for x
    x = 8,875,740,329.54/87,142.63
  6. Step 6: Final answer
    x = 101,853.02

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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.