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Finding the Fourth Proportional to 152,709.21, 210,729.21 and 92,244.15

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Solution

The fourth proportional to 152,709.21, 210,729.21 and 92,244.15 is: 127,291.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,709.21 : 210,729.21 = 92,244.15 : x
  2. Step 2: Convert to fraction form
    152,709.21/210,729.21 = 92,244.15/x
  3. Step 3: Cross multiply
    152,709.21x = 210,729.21 × 92,244.15
  4. Step 4: Simplify right side
    152,709.21x = 19,438,536,856.62
  5. Step 5: Solve for x
    x = 19,438,536,856.62/152,709.21
  6. Step 6: Final answer
    x = 127,291.19

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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.