Home / 103,679.36-155,513.55-51,071.07

Finding the Fourth Proportional to 103,679.36, 155,513.55 and 51,071.07

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Solution

The fourth proportional to 103,679.36, 155,513.55 and 51,071.07 is: 76,603.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,679.36 : 155,513.55 = 51,071.07 : x
  2. Step 2: Convert to fraction form
    103,679.36/155,513.55 = 51,071.07/x
  3. Step 3: Cross multiply
    103,679.36x = 155,513.55 × 51,071.07
  4. Step 4: Simplify right side
    103,679.36x = 7,942,243,398.00
  5. Step 5: Solve for x
    x = 7,942,243,398.00/103,679.36
  6. Step 6: Final answer
    x = 76,603.90

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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.