Home / 120,518.76-180,779.22-31,784.88

Finding the Fourth Proportional to 120,518.76, 180,779.22 and 31,784.88

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Solution

The fourth proportional to 120,518.76, 180,779.22 and 31,784.88 is: 47,677.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,518.76 : 180,779.22 = 31,784.88 : x
  2. Step 2: Convert to fraction form
    120,518.76/180,779.22 = 31,784.88/x
  3. Step 3: Cross multiply
    120,518.76x = 180,779.22 × 31,784.88
  4. Step 4: Simplify right side
    120,518.76x = 5,746,045,814.19
  5. Step 5: Solve for x
    x = 5,746,045,814.19/120,518.76
  6. Step 6: Final answer
    x = 47,677.60

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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.