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Finding the Fourth Proportional to 88,894.90, 133,342.35 and 81,637.30

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Solution

The fourth proportional to 88,894.90, 133,342.35 and 81,637.30 is: 122,455.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,894.90 : 133,342.35 = 81,637.30 : x
  2. Step 2: Convert to fraction form
    88,894.90/133,342.35 = 81,637.30/x
  3. Step 3: Cross multiply
    88,894.90x = 133,342.35 × 81,637.30
  4. Step 4: Simplify right side
    88,894.90x = 10,885,709,429.66
  5. Step 5: Solve for x
    x = 10,885,709,429.66/88,894.90
  6. Step 6: Final answer
    x = 122,455.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.