Home / 120,455.31-180,675.66-31,706.85

Finding the Fourth Proportional to 120,455.31, 180,675.66 and 31,706.85

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Solution

The fourth proportional to 120,455.31, 180,675.66 and 31,706.85 is: 47,558.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,455.31 : 180,675.66 = 31,706.85 : x
  2. Step 2: Convert to fraction form
    120,455.31/180,675.66 = 31,706.85/x
  3. Step 3: Cross multiply
    120,455.31x = 180,675.66 × 31,706.85
  4. Step 4: Simplify right side
    120,455.31x = 5,728,656,050.27
  5. Step 5: Solve for x
    x = 5,728,656,050.27/120,455.31
  6. Step 6: Final answer
    x = 47,558.35

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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.