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Finding the Fourth Proportional to 119,653.20, 164,073.60 and 115,279.20

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Solution

The fourth proportional to 119,653.20, 164,073.60 and 115,279.20 is: 158,075.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,653.20 : 164,073.60 = 115,279.20 : x
  2. Step 2: Convert to fraction form
    119,653.20/164,073.60 = 115,279.20/x
  3. Step 3: Cross multiply
    119,653.20x = 164,073.60 × 115,279.20
  4. Step 4: Simplify right side
    119,653.20x = 18,914,273,349.12
  5. Step 5: Solve for x
    x = 18,914,273,349.12/119,653.20
  6. Step 6: Final answer
    x = 158,075.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.