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Finding the Fourth Proportional to 152,055.72, 209,830.77 and 88,388.51

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Solution

The fourth proportional to 152,055.72, 209,830.77 and 88,388.51 is: 121,972.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,055.72 : 209,830.77 = 88,388.51 : x
  2. Step 2: Convert to fraction form
    152,055.72/209,830.77 = 88,388.51/x
  3. Step 3: Cross multiply
    152,055.72x = 209,830.77 × 88,388.51
  4. Step 4: Simplify right side
    152,055.72x = 18,546,628,063.30
  5. Step 5: Solve for x
    x = 18,546,628,063.30/152,055.72
  6. Step 6: Final answer
    x = 121,972.58

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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.