Home / 120,835.40-181,253.10-89,342.60

Finding the Fourth Proportional to 120,835.40, 181,253.10 and 89,342.60

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Solution

The fourth proportional to 120,835.40, 181,253.10 and 89,342.60 is: 134,013.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,835.40 : 181,253.10 = 89,342.60 : x
  2. Step 2: Convert to fraction form
    120,835.40/181,253.10 = 89,342.60/x
  3. Step 3: Cross multiply
    120,835.40x = 181,253.10 × 89,342.60
  4. Step 4: Simplify right side
    120,835.40x = 16,193,623,212.06
  5. Step 5: Solve for x
    x = 16,193,623,212.06/120,835.40
  6. Step 6: Final answer
    x = 134,013.90

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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.