Home / 78,837.18-118,193.13-45,519.54

Finding the Fourth Proportional to 78,837.18, 118,193.13 and 45,519.54

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Solution

The fourth proportional to 78,837.18, 118,193.13 and 45,519.54 is: 68,243.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,837.18 : 118,193.13 = 45,519.54 : x
  2. Step 2: Convert to fraction form
    78,837.18/118,193.13 = 45,519.54/x
  3. Step 3: Cross multiply
    78,837.18x = 118,193.13 × 45,519.54
  4. Step 4: Simplify right side
    78,837.18x = 5,380,096,908.76
  5. Step 5: Solve for x
    x = 5,380,096,908.76/78,837.18
  6. Step 6: Final answer
    x = 68,243.14

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1.5x scale

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.