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Finding the Fourth Proportional to 152,679.75, 210,699.32 and 84,701.15

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Solution

The fourth proportional to 152,679.75, 210,699.32 and 84,701.15 is: 116,888.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,679.75 : 210,699.32 = 84,701.15 : x
  2. Step 2: Convert to fraction form
    152,679.75/210,699.32 = 84,701.15/x
  3. Step 3: Cross multiply
    152,679.75x = 210,699.32 × 84,701.15
  4. Step 4: Simplify right side
    152,679.75x = 17,846,474,708.22
  5. Step 5: Solve for x
    x = 17,846,474,708.22/152,679.75
  6. Step 6: Final answer
    x = 116,888.29

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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.