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Finding the Fourth Proportional to 160,636.40, 241,075.80 and 81,816.72

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Solution

The fourth proportional to 160,636.40, 241,075.80 and 81,816.72 is: 122,786.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,636.40 : 241,075.80 = 81,816.72 : x
  2. Step 2: Convert to fraction form
    160,636.40/241,075.80 = 81,816.72/x
  3. Step 3: Cross multiply
    160,636.40x = 241,075.80 × 81,816.72
  4. Step 4: Simplify right side
    160,636.40x = 19,724,031,227.38
  5. Step 5: Solve for x
    x = 19,724,031,227.38/160,636.40
  6. Step 6: Final answer
    x = 122,786.81

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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.