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Finding the Fourth Proportional to 123,496.52, 170,425.14 and 66,907.40

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Solution

The fourth proportional to 123,496.52, 170,425.14 and 66,907.40 is: 92,332.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,496.52 : 170,425.14 = 66,907.40 : x
  2. Step 2: Convert to fraction form
    123,496.52/170,425.14 = 66,907.40/x
  3. Step 3: Cross multiply
    123,496.52x = 170,425.14 × 66,907.40
  4. Step 4: Simplify right side
    123,496.52x = 11,402,703,012.04
  5. Step 5: Solve for x
    x = 11,402,703,012.04/123,496.52
  6. Step 6: Final answer
    x = 92,332.18

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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.