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Finding the Fourth Proportional to 169,012.95, 253,437.40 and 84,736.90

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Solution

The fourth proportional to 169,012.95, 253,437.40 and 84,736.90 is: 127,064.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,012.95 : 253,437.40 = 84,736.90 : x
  2. Step 2: Convert to fraction form
    169,012.95/253,437.40 = 84,736.90/x
  3. Step 3: Cross multiply
    169,012.95x = 253,437.40 × 84,736.90
  4. Step 4: Simplify right side
    169,012.95x = 21,475,499,620.06
  5. Step 5: Solve for x
    x = 21,475,499,620.06/169,012.95
  6. Step 6: Final answer
    x = 127,064.23

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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.