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Finding the Fourth Proportional to 148,590.25, 205,058.15 and 81,522.25

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Solution

The fourth proportional to 148,590.25, 205,058.15 and 81,522.25 is: 112,502.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,590.25 : 205,058.15 = 81,522.25 : x
  2. Step 2: Convert to fraction form
    148,590.25/205,058.15 = 81,522.25/x
  3. Step 3: Cross multiply
    148,590.25x = 205,058.15 × 81,522.25
  4. Step 4: Simplify right side
    148,590.25x = 16,716,801,768.84
  5. Step 5: Solve for x
    x = 16,716,801,768.84/148,590.25
  6. Step 6: Final answer
    x = 112,502.68

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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.