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Finding the Fourth Proportional to 113,486.88, 169,970.88 and 54,364.32

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Solution

The fourth proportional to 113,486.88, 169,970.88 and 54,364.32 is: 81,422.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,486.88 : 169,970.88 = 54,364.32 : x
  2. Step 2: Convert to fraction form
    113,486.88/169,970.88 = 54,364.32/x
  3. Step 3: Cross multiply
    113,486.88x = 169,970.88 × 54,364.32
  4. Step 4: Simplify right side
    113,486.88x = 9,240,351,311.00
  5. Step 5: Solve for x
    x = 9,240,351,311.00/113,486.88
  6. Step 6: Final answer
    x = 81,422.20

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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.