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Finding the Fourth Proportional to 165,755.39, 228,742.47 and 90,303.89

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Solution

The fourth proportional to 165,755.39, 228,742.47 and 90,303.89 is: 124,619.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,755.39 : 228,742.47 = 90,303.89 : x
  2. Step 2: Convert to fraction form
    165,755.39/228,742.47 = 90,303.89/x
  3. Step 3: Cross multiply
    165,755.39x = 228,742.47 × 90,303.89
  4. Step 4: Simplify right side
    165,755.39x = 20,656,334,397.69
  5. Step 5: Solve for x
    x = 20,656,334,397.69/165,755.39
  6. Step 6: Final answer
    x = 124,619.38

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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.