Home / 134,840.07-185,999.13-87,121.56

Finding the Fourth Proportional to 134,840.07, 185,999.13 and 87,121.56

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Solution

The fourth proportional to 134,840.07, 185,999.13 and 87,121.56 is: 120,175.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,840.07 : 185,999.13 = 87,121.56 : x
  2. Step 2: Convert to fraction form
    134,840.07/185,999.13 = 87,121.56/x
  3. Step 3: Cross multiply
    134,840.07x = 185,999.13 × 87,121.56
  4. Step 4: Simplify right side
    134,840.07x = 16,204,534,364.24
  5. Step 5: Solve for x
    x = 16,204,534,364.24/134,840.07
  6. Step 6: Final answer
    x = 120,175.96

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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.