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Finding the Fourth Proportional to 158,840.68, 219,200.74 and 86,243.68

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Solution

The fourth proportional to 158,840.68, 219,200.74 and 86,243.68 is: 119,016.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,840.68 : 219,200.74 = 86,243.68 : x
  2. Step 2: Convert to fraction form
    158,840.68/219,200.74 = 86,243.68/x
  3. Step 3: Cross multiply
    158,840.68x = 219,200.74 × 86,243.68
  4. Step 4: Simplify right side
    158,840.68x = 18,904,678,476.32
  5. Step 5: Solve for x
    x = 18,904,678,476.32/158,840.68
  6. Step 6: Final answer
    x = 119,016.61

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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.