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Finding the Fourth Proportional to 158,329.98, 218,490.48 and 86,708.16

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Solution

The fourth proportional to 158,329.98, 218,490.48 and 86,708.16 is: 119,654.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,329.98 : 218,490.48 = 86,708.16 : x
  2. Step 2: Convert to fraction form
    158,329.98/218,490.48 = 86,708.16/x
  3. Step 3: Cross multiply
    158,329.98x = 218,490.48 × 86,708.16
  4. Step 4: Simplify right side
    158,329.98x = 18,944,907,498.32
  5. Step 5: Solve for x
    x = 18,944,907,498.32/158,329.98
  6. Step 6: Final answer
    x = 119,654.58

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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.