Home / 120,836.16-181,250.64-70,877.88

Finding the Fourth Proportional to 120,836.16, 181,250.64 and 70,877.88

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Solution

The fourth proportional to 120,836.16, 181,250.64 and 70,877.88 is: 106,314.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,836.16 : 181,250.64 = 70,877.88 : x
  2. Step 2: Convert to fraction form
    120,836.16/181,250.64 = 70,877.88/x
  3. Step 3: Cross multiply
    120,836.16x = 181,250.64 × 70,877.88
  4. Step 4: Simplify right side
    120,836.16x = 12,846,661,111.84
  5. Step 5: Solve for x
    x = 12,846,661,111.84/120,836.16
  6. Step 6: Final answer
    x = 106,314.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.