Home / 108,539.07-149,816.43-66,118.56

Finding the Fourth Proportional to 108,539.07, 149,816.43 and 66,118.56

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Solution

The fourth proportional to 108,539.07, 149,816.43 and 66,118.56 is: 91,263.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,539.07 : 149,816.43 = 66,118.56 : x
  2. Step 2: Convert to fraction form
    108,539.07/149,816.43 = 66,118.56/x
  3. Step 3: Cross multiply
    108,539.07x = 149,816.43 × 66,118.56
  4. Step 4: Simplify right side
    108,539.07x = 9,905,646,615.94
  5. Step 5: Solve for x
    x = 9,905,646,615.94/108,539.07
  6. Step 6: Final answer
    x = 91,263.42

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1.5x scale

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.