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Finding the Fourth Proportional to 190,443.62, 262,820.50 and 105,560.76

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Solution

The fourth proportional to 190,443.62, 262,820.50 and 105,560.76 is: 145,678.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,443.62 : 262,820.50 = 105,560.76 : x
  2. Step 2: Convert to fraction form
    190,443.62/262,820.50 = 105,560.76/x
  3. Step 3: Cross multiply
    190,443.62x = 262,820.50 × 105,560.76
  4. Step 4: Simplify right side
    190,443.62x = 27,743,531,723.58
  5. Step 5: Solve for x
    x = 27,743,531,723.58/190,443.62
  6. Step 6: Final answer
    x = 145,678.45

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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.