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Finding the Fourth Proportional to 171,630.81, 236,862.99 and 103,664.32

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Solution

The fourth proportional to 171,630.81, 236,862.99 and 103,664.32 is: 143,064.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,630.81 : 236,862.99 = 103,664.32 : x
  2. Step 2: Convert to fraction form
    171,630.81/236,862.99 = 103,664.32/x
  3. Step 3: Cross multiply
    171,630.81x = 236,862.99 × 103,664.32
  4. Step 4: Simplify right side
    171,630.81x = 24,554,240,199.36
  5. Step 5: Solve for x
    x = 24,554,240,199.36/171,630.81
  6. Step 6: Final answer
    x = 143,064.29

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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.