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Finding the Fourth Proportional to 110,889.68, 152,984.36 and 68,374.40

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Solution

The fourth proportional to 110,889.68, 152,984.36 and 68,374.40 is: 94,329.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,889.68 : 152,984.36 = 68,374.40 : x
  2. Step 2: Convert to fraction form
    110,889.68/152,984.36 = 68,374.40/x
  3. Step 3: Cross multiply
    110,889.68x = 152,984.36 × 68,374.40
  4. Step 4: Simplify right side
    110,889.68x = 10,460,213,824.38
  5. Step 5: Solve for x
    x = 10,460,213,824.38/110,889.68
  6. Step 6: Final answer
    x = 94,329.91

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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.