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Finding the Fourth Proportional to 190,274.64, 262,575.72 and 105,389.88

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Solution

The fourth proportional to 190,274.64, 262,575.72 and 105,389.88 is: 145,436.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,274.64 : 262,575.72 = 105,389.88 : x
  2. Step 2: Convert to fraction form
    190,274.64/262,575.72 = 105,389.88/x
  3. Step 3: Cross multiply
    190,274.64x = 262,575.72 × 105,389.88
  4. Step 4: Simplify right side
    190,274.64x = 27,672,823,621.71
  5. Step 5: Solve for x
    x = 27,672,823,621.71/190,274.64
  6. Step 6: Final answer
    x = 145,436.22

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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.