Home / 108,538.07-149,815.05-66,117.56

Finding the Fourth Proportional to 108,538.07, 149,815.05 and 66,117.56

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Solution

The fourth proportional to 108,538.07, 149,815.05 and 66,117.56 is: 91,262.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,538.07 : 149,815.05 = 66,117.56 : x
  2. Step 2: Convert to fraction form
    108,538.07/149,815.05 = 66,117.56/x
  3. Step 3: Cross multiply
    108,538.07x = 149,815.05 × 66,117.56
  4. Step 4: Simplify right side
    108,538.07x = 9,905,405,557.28
  5. Step 5: Solve for x
    x = 9,905,405,557.28/108,538.07
  6. Step 6: Final answer
    x = 91,262.04

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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.