Home / 131,783.13-181,860.44-71,353.80

Finding the Fourth Proportional to 131,783.13, 181,860.44 and 71,353.80

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Solution

The fourth proportional to 131,783.13, 181,860.44 and 71,353.80 is: 98,468.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,783.13 : 181,860.44 = 71,353.80 : x
  2. Step 2: Convert to fraction form
    131,783.13/181,860.44 = 71,353.80/x
  3. Step 3: Cross multiply
    131,783.13x = 181,860.44 × 71,353.80
  4. Step 4: Simplify right side
    131,783.13x = 12,976,433,106.90
  5. Step 5: Solve for x
    x = 12,976,433,106.90/131,783.13
  6. Step 6: Final answer
    x = 98,468.09

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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.