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Finding the Fourth Proportional to 113,392.88, 170,089.32 and 80,509.96

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Solution

The fourth proportional to 113,392.88, 170,089.32 and 80,509.96 is: 120,764.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,392.88 : 170,089.32 = 80,509.96 : x
  2. Step 2: Convert to fraction form
    113,392.88/170,089.32 = 80,509.96/x
  3. Step 3: Cross multiply
    113,392.88x = 170,089.32 × 80,509.96
  4. Step 4: Simplify right side
    113,392.88x = 13,693,884,349.63
  5. Step 5: Solve for x
    x = 13,693,884,349.63/113,392.88
  6. Step 6: Final answer
    x = 120,764.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.