Home / 103,679.48-155,513.73-51,071.20

Finding the Fourth Proportional to 103,679.48, 155,513.73 and 51,071.20

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Solution

The fourth proportional to 103,679.48, 155,513.73 and 51,071.20 is: 76,604.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,679.48 : 155,513.73 = 51,071.20 : x
  2. Step 2: Convert to fraction form
    103,679.48/155,513.73 = 51,071.20/x
  3. Step 3: Cross multiply
    103,679.48x = 155,513.73 × 51,071.20
  4. Step 4: Simplify right side
    103,679.48x = 7,942,272,807.58
  5. Step 5: Solve for x
    x = 7,942,272,807.58/103,679.48
  6. Step 6: Final answer
    x = 76,604.10

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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.