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Finding the Fourth Proportional to 104,839.70, 157,259.55 and 81,482.90

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Solution

The fourth proportional to 104,839.70, 157,259.55 and 81,482.90 is: 122,224.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,839.70 : 157,259.55 = 81,482.90 : x
  2. Step 2: Convert to fraction form
    104,839.70/157,259.55 = 81,482.90/x
  3. Step 3: Cross multiply
    104,839.70x = 157,259.55 × 81,482.90
  4. Step 4: Simplify right side
    104,839.70x = 12,813,964,186.70
  5. Step 5: Solve for x
    x = 12,813,964,186.70/104,839.70
  6. Step 6: Final answer
    x = 122,224.35

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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.