Home / 108,555.18-149,835.87-66,113.34

Finding the Fourth Proportional to 108,555.18, 149,835.87 and 66,113.34

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Solution

The fourth proportional to 108,555.18, 149,835.87 and 66,113.34 is: 91,254.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,555.18 : 149,835.87 = 66,113.34 : x
  2. Step 2: Convert to fraction form
    108,555.18/149,835.87 = 66,113.34/x
  3. Step 3: Cross multiply
    108,555.18x = 149,835.87 × 66,113.34
  4. Step 4: Simplify right side
    108,555.18x = 9,906,149,817.51
  5. Step 5: Solve for x
    x = 9,906,149,817.51/108,555.18
  6. Step 6: Final answer
    x = 91,254.51

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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.