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Finding the Fourth Proportional to 152,814.92, 210,894.90 and 84,839.72

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Solution

The fourth proportional to 152,814.92, 210,894.90 and 84,839.72 is: 117,084.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,814.92 : 210,894.90 = 84,839.72 : x
  2. Step 2: Convert to fraction form
    152,814.92/210,894.90 = 84,839.72/x
  3. Step 3: Cross multiply
    152,814.92x = 210,894.90 × 84,839.72
  4. Step 4: Simplify right side
    152,814.92x = 17,892,264,265.43
  5. Step 5: Solve for x
    x = 17,892,264,265.43/152,814.92
  6. Step 6: Final answer
    x = 117,084.54

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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.