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Finding the Fourth Proportional to 110,728.10, 152,813.24 and 62,978.60

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Solution

The fourth proportional to 110,728.10, 152,813.24 and 62,978.60 is: 86,915.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,728.10 : 152,813.24 = 62,978.60 : x
  2. Step 2: Convert to fraction form
    110,728.10/152,813.24 = 62,978.60/x
  3. Step 3: Cross multiply
    110,728.10x = 152,813.24 × 62,978.60
  4. Step 4: Simplify right side
    110,728.10x = 9,623,962,837.70
  5. Step 5: Solve for x
    x = 9,623,962,837.70/110,728.10
  6. Step 6: Final answer
    x = 86,915.28

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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.