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Finding the Fourth Proportional to 170,907.76, 235,519.64 and 123,070.78

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Solution

The fourth proportional to 170,907.76, 235,519.64 and 123,070.78 is: 169,597.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,907.76 : 235,519.64 = 123,070.78 : x
  2. Step 2: Convert to fraction form
    170,907.76/235,519.64 = 123,070.78/x
  3. Step 3: Cross multiply
    170,907.76x = 235,519.64 × 123,070.78
  4. Step 4: Simplify right side
    170,907.76x = 28,985,585,800.12
  5. Step 5: Solve for x
    x = 28,985,585,800.12/170,907.76
  6. Step 6: Final answer
    x = 169,597.83

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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.