Home / 81,416.63-122,127.34-69,495.23

Finding the Fourth Proportional to 81,416.63, 122,127.34 and 69,495.23

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Solution

The fourth proportional to 81,416.63, 122,127.34 and 69,495.23 is: 104,244.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,416.63 : 122,127.34 = 69,495.23 : x
  2. Step 2: Convert to fraction form
    81,416.63/122,127.34 = 69,495.23/x
  3. Step 3: Cross multiply
    81,416.63x = 122,127.34 × 69,495.23
  4. Step 4: Simplify right side
    81,416.63x = 8,487,267,714.17
  5. Step 5: Solve for x
    x = 8,487,267,714.17/81,416.63
  6. Step 6: Final answer
    x = 104,244.90

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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.