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Finding the Fourth Proportional to 165,791.43, 228,792.47 and 90,339.93

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Solution

The fourth proportional to 165,791.43, 228,792.47 and 90,339.93 is: 124,669.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,791.43 : 228,792.47 = 90,339.93 : x
  2. Step 2: Convert to fraction form
    165,791.43/228,792.47 = 90,339.93/x
  3. Step 3: Cross multiply
    165,791.43x = 228,792.47 × 90,339.93
  4. Step 4: Simplify right side
    165,791.43x = 20,669,095,272.63
  5. Step 5: Solve for x
    x = 20,669,095,272.63/165,791.43
  6. Step 6: Final answer
    x = 124,669.26

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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.