Home / 165,709.16-228,681.28-90,257.64

Finding the Fourth Proportional to 165,709.16, 228,681.28 and 90,257.64

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Solution

The fourth proportional to 165,709.16, 228,681.28 and 90,257.64 is: 124,556.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,709.16 : 228,681.28 = 90,257.64 : x
  2. Step 2: Convert to fraction form
    165,709.16/228,681.28 = 90,257.64/x
  3. Step 3: Cross multiply
    165,709.16x = 228,681.28 × 90,257.64
  4. Step 4: Simplify right side
    165,709.16x = 20,640,232,644.98
  5. Step 5: Solve for x
    x = 20,640,232,644.98/165,709.16
  6. Step 6: Final answer
    x = 124,556.98

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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.