Home / 120,157.41-180,246.36-31,410.78

Finding the Fourth Proportional to 120,157.41, 180,246.36 and 31,410.78

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Solution

The fourth proportional to 120,157.41, 180,246.36 and 31,410.78 is: 47,118.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,157.41 : 180,246.36 = 31,410.78 : x
  2. Step 2: Convert to fraction form
    120,157.41/180,246.36 = 31,410.78/x
  3. Step 3: Cross multiply
    120,157.41x = 180,246.36 × 31,410.78
  4. Step 4: Simplify right side
    120,157.41x = 5,661,678,201.63
  5. Step 5: Solve for x
    x = 5,661,678,201.63/120,157.41
  6. Step 6: Final answer
    x = 47,118.84

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1.5x scale

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.