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Finding the Fourth Proportional to 181,859.72, 250,966.70 and 105,393.50

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Solution

The fourth proportional to 181,859.72, 250,966.70 and 105,393.50 is: 145,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,859.72 : 250,966.70 = 105,393.50 : x
  2. Step 2: Convert to fraction form
    181,859.72/250,966.70 = 105,393.50/x
  3. Step 3: Cross multiply
    181,859.72x = 250,966.70 × 105,393.50
  4. Step 4: Simplify right side
    181,859.72x = 26,450,258,896.45
  5. Step 5: Solve for x
    x = 26,450,258,896.45/181,859.72
  6. Step 6: Final answer
    x = 145,443.20

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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.