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Finding the Fourth Proportional to 159,176.49, 219,662.47 and 90,279.06

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Solution

The fourth proportional to 159,176.49, 219,662.47 and 90,279.06 is: 124,584.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,176.49 : 219,662.47 = 90,279.06 : x
  2. Step 2: Convert to fraction form
    159,176.49/219,662.47 = 90,279.06/x
  3. Step 3: Cross multiply
    159,176.49x = 219,662.47 × 90,279.06
  4. Step 4: Simplify right side
    159,176.49x = 19,830,921,308.88
  5. Step 5: Solve for x
    x = 19,830,921,308.88/159,176.49
  6. Step 6: Final answer
    x = 124,584.49

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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.