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Finding the Fourth Proportional to 152,889.37, 210,980.13 and 84,910.70

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Solution

The fourth proportional to 152,889.37, 210,980.13 and 84,910.70 is: 117,172.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,889.37 : 210,980.13 = 84,910.70 : x
  2. Step 2: Convert to fraction form
    152,889.37/210,980.13 = 84,910.70/x
  3. Step 3: Cross multiply
    152,889.37x = 210,980.13 × 84,910.70
  4. Step 4: Simplify right side
    152,889.37x = 17,914,470,524.39
  5. Step 5: Solve for x
    x = 17,914,470,524.39/152,889.37
  6. Step 6: Final answer
    x = 117,172.77

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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.