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Finding the Fourth Proportional to 108,782.66, 150,119.92 and 61,040.45

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Solution

The fourth proportional to 108,782.66, 150,119.92 and 61,040.45 is: 84,235.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,782.66 : 150,119.92 = 61,040.45 : x
  2. Step 2: Convert to fraction form
    108,782.66/150,119.92 = 61,040.45/x
  3. Step 3: Cross multiply
    108,782.66x = 150,119.92 × 61,040.45
  4. Step 4: Simplify right side
    108,782.66x = 9,163,387,470.76
  5. Step 5: Solve for x
    x = 9,163,387,470.76/108,782.66
  6. Step 6: Final answer
    x = 84,235.74

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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.