Home / 120,834.40-181,251.60-89,341.60

Finding the Fourth Proportional to 120,834.40, 181,251.60 and 89,341.60

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Solution

The fourth proportional to 120,834.40, 181,251.60 and 89,341.60 is: 134,012.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,834.40 : 181,251.60 = 89,341.60 : x
  2. Step 2: Convert to fraction form
    120,834.40/181,251.60 = 89,341.60/x
  3. Step 3: Cross multiply
    120,834.40x = 181,251.60 × 89,341.60
  4. Step 4: Simplify right side
    120,834.40x = 16,193,307,946.56
  5. Step 5: Solve for x
    x = 16,193,307,946.56/120,834.40
  6. Step 6: Final answer
    x = 134,012.40

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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.