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Finding the Fourth Proportional to 187,478.71, 281,247.36 and 61,089.64

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Solution

The fourth proportional to 187,478.71, 281,247.36 and 61,089.64 is: 91,644.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,478.71 : 281,247.36 = 61,089.64 : x
  2. Step 2: Convert to fraction form
    187,478.71/281,247.36 = 61,089.64/x
  3. Step 3: Cross multiply
    187,478.71x = 281,247.36 × 61,089.64
  4. Step 4: Simplify right side
    187,478.71x = 17,181,299,973.35
  5. Step 5: Solve for x
    x = 17,181,299,973.35/187,478.71
  6. Step 6: Final answer
    x = 91,644.01

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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.