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Finding the Fourth Proportional to 126,362, 174,379.56 and 76,070.72

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Solution

The fourth proportional to 126,362, 174,379.56 and 76,070.72 is: 104,977.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,362 : 174,379.56 = 76,070.72 : x
  2. Step 2: Convert to fraction form
    126,362/174,379.56 = 76,070.72/x
  3. Step 3: Cross multiply
    126,362x = 174,379.56 × 76,070.72
  4. Step 4: Simplify right side
    126,362x = 13,265,178,682.48
  5. Step 5: Solve for x
    x = 13,265,178,682.48/126,362
  6. Step 6: Final answer
    x = 104,977.59

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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.