Home / 121,438.40-180,936.60-114,647.76

Finding the Fourth Proportional to 121,438.40, 180,936.60 and 114,647.76

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Solution

The fourth proportional to 121,438.40, 180,936.60 and 114,647.76 is: 170,818.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,438.40 : 180,936.60 = 114,647.76 : x
  2. Step 2: Convert to fraction form
    121,438.40/180,936.60 = 114,647.76/x
  3. Step 3: Cross multiply
    121,438.40x = 180,936.60 × 114,647.76
  4. Step 4: Simplify right side
    121,438.40x = 20,743,975,892.02
  5. Step 5: Solve for x
    x = 20,743,975,892.02/121,438.40
  6. Step 6: Final answer
    x = 170,818.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.