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Finding the Fourth Proportional to 123,897.80, 170,970.54 and 67,307.96

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Solution

The fourth proportional to 123,897.80, 170,970.54 and 67,307.96 is: 92,880.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,897.80 : 170,970.54 = 67,307.96 : x
  2. Step 2: Convert to fraction form
    123,897.80/170,970.54 = 67,307.96/x
  3. Step 3: Cross multiply
    123,897.80x = 170,970.54 × 67,307.96
  4. Step 4: Simplify right side
    123,897.80x = 11,507,678,267.50
  5. Step 5: Solve for x
    x = 11,507,678,267.50/123,897.80
  6. Step 6: Final answer
    x = 92,880.41

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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.