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Finding the Fourth Proportional to 158,949, 219,349.80 and 87,329.16

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Solution

The fourth proportional to 158,949, 219,349.80 and 87,329.16 is: 120,514.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,949 : 219,349.80 = 87,329.16 : x
  2. Step 2: Convert to fraction form
    158,949/219,349.80 = 87,329.16/x
  3. Step 3: Cross multiply
    158,949x = 219,349.80 × 87,329.16
  4. Step 4: Simplify right side
    158,949x = 19,155,633,780.17
  5. Step 5: Solve for x
    x = 19,155,633,780.17/158,949
  6. Step 6: Final answer
    x = 120,514.34

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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.