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Finding the Fourth Proportional to 123,495.93, 170,424.56 and 66,907.31

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Solution

The fourth proportional to 123,495.93, 170,424.56 and 66,907.31 is: 92,332.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,495.93 : 170,424.56 = 66,907.31 : x
  2. Step 2: Convert to fraction form
    123,495.93/170,424.56 = 66,907.31/x
  3. Step 3: Cross multiply
    123,495.93x = 170,424.56 × 66,907.31
  4. Step 4: Simplify right side
    123,495.93x = 11,402,647,680.87
  5. Step 5: Solve for x
    x = 11,402,647,680.87/123,495.93
  6. Step 6: Final answer
    x = 92,332.17

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1.5x scale

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.