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Finding the Fourth Proportional to 219,661.64, 303,129.78 and 124,164.98

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Solution

The fourth proportional to 219,661.64, 303,129.78 and 124,164.98 is: 171,345.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,661.64 : 303,129.78 = 124,164.98 : x
  2. Step 2: Convert to fraction form
    219,661.64/303,129.78 = 124,164.98/x
  3. Step 3: Cross multiply
    219,661.64x = 303,129.78 × 124,164.98
  4. Step 4: Simplify right side
    219,661.64x = 37,638,103,071.10
  5. Step 5: Solve for x
    x = 37,638,103,071.10/219,661.64
  6. Step 6: Final answer
    x = 171,345.82

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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.