Home / 120,039.32-180,059.06-31,292.60

Finding the Fourth Proportional to 120,039.32, 180,059.06 and 31,292.60

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Solution

The fourth proportional to 120,039.32, 180,059.06 and 31,292.60 is: 46,938.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,039.32 : 180,059.06 = 31,292.60 : x
  2. Step 2: Convert to fraction form
    120,039.32/180,059.06 = 31,292.60/x
  3. Step 3: Cross multiply
    120,039.32x = 180,059.06 × 31,292.60
  4. Step 4: Simplify right side
    120,039.32x = 5,634,516,140.96
  5. Step 5: Solve for x
    x = 5,634,516,140.96/120,039.32
  6. Step 6: Final answer
    x = 46,938.92

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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.