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Finding the Fourth Proportional to 134,907.40, 202,490.70 and 68,422.60

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Solution

The fourth proportional to 134,907.40, 202,490.70 and 68,422.60 is: 102,699.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,907.40 : 202,490.70 = 68,422.60 : x
  2. Step 2: Convert to fraction form
    134,907.40/202,490.70 = 68,422.60/x
  3. Step 3: Cross multiply
    134,907.40x = 202,490.70 × 68,422.60
  4. Step 4: Simplify right side
    134,907.40x = 13,854,940,169.82
  5. Step 5: Solve for x
    x = 13,854,940,169.82/134,907.40
  6. Step 6: Final answer
    x = 102,699.63

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1.5x scale

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.