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Finding the Fourth Proportional to 165,510, 228,407.45 and 90,058.50

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Solution

The fourth proportional to 165,510, 228,407.45 and 90,058.50 is: 124,282.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,510 : 228,407.45 = 90,058.50 : x
  2. Step 2: Convert to fraction form
    165,510/228,407.45 = 90,058.50/x
  3. Step 3: Cross multiply
    165,510x = 228,407.45 × 90,058.50
  4. Step 4: Simplify right side
    165,510x = 20,570,031,885.53
  5. Step 5: Solve for x
    x = 20,570,031,885.53/165,510
  6. Step 6: Final answer
    x = 124,282.71

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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.