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Finding the Fourth Proportional to 165,706.80, 228,675.27 and 90,255.30

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Solution

The fourth proportional to 165,706.80, 228,675.27 and 90,255.30 is: 124,552.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,706.80 : 228,675.27 = 90,255.30 : x
  2. Step 2: Convert to fraction form
    165,706.80/228,675.27 = 90,255.30/x
  3. Step 3: Cross multiply
    165,706.80x = 228,675.27 × 90,255.30
  4. Step 4: Simplify right side
    165,706.80x = 20,639,155,096.43
  5. Step 5: Solve for x
    x = 20,639,155,096.43/165,706.80
  6. Step 6: Final answer
    x = 124,552.25

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1.5x scale

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.