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Finding the Fourth Proportional to 158,577.51, 218,840.07 and 86,957.67

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Solution

The fourth proportional to 158,577.51, 218,840.07 and 86,957.67 is: 120,003.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,577.51 : 218,840.07 = 86,957.67 : x
  2. Step 2: Convert to fraction form
    158,577.51/218,840.07 = 86,957.67/x
  3. Step 3: Cross multiply
    158,577.51x = 218,840.07 × 86,957.67
  4. Step 4: Simplify right side
    158,577.51x = 19,029,822,589.84
  5. Step 5: Solve for x
    x = 19,029,822,589.84/158,577.51
  6. Step 6: Final answer
    x = 120,003.29

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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.