Home / 120,156.95-180,245.68-31,410.31

Finding the Fourth Proportional to 120,156.95, 180,245.68 and 31,410.31

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Solution

The fourth proportional to 120,156.95, 180,245.68 and 31,410.31 is: 47,118.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,156.95 : 180,245.68 = 31,410.31 : x
  2. Step 2: Convert to fraction form
    120,156.95/180,245.68 = 31,410.31/x
  3. Step 3: Cross multiply
    120,156.95x = 180,245.68 × 31,410.31
  4. Step 4: Simplify right side
    120,156.95x = 5,661,573,017.79
  5. Step 5: Solve for x
    x = 5,661,573,017.79/120,156.95
  6. Step 6: Final answer
    x = 47,118.15

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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.