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Finding the Fourth Proportional to 148,994.40, 205,612.22 and 81,926.40

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Solution

The fourth proportional to 148,994.40, 205,612.22 and 81,926.40 is: 113,058.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,994.40 : 205,612.22 = 81,926.40 : x
  2. Step 2: Convert to fraction form
    148,994.40/205,612.22 = 81,926.40/x
  3. Step 3: Cross multiply
    148,994.40x = 205,612.22 × 81,926.40
  4. Step 4: Simplify right side
    148,994.40x = 16,845,068,980.61
  5. Step 5: Solve for x
    x = 16,845,068,980.61/148,994.40
  6. Step 6: Final answer
    x = 113,058.40

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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.