Home / 165,603.40-228,531.30-90,151.72

Finding the Fourth Proportional to 165,603.40, 228,531.30 and 90,151.72

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Solution

The fourth proportional to 165,603.40, 228,531.30 and 90,151.72 is: 124,408.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,603.40 : 228,531.30 = 90,151.72 : x
  2. Step 2: Convert to fraction form
    165,603.40/228,531.30 = 90,151.72/x
  3. Step 3: Cross multiply
    165,603.40x = 228,531.30 × 90,151.72
  4. Step 4: Simplify right side
    165,603.40x = 20,602,489,768.84
  5. Step 5: Solve for x
    x = 20,602,489,768.84/165,603.40
  6. Step 6: Final answer
    x = 124,408.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.