Home / 108,605.17-149,875.13-66,163.67

Finding the Fourth Proportional to 108,605.17, 149,875.13 and 66,163.67

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Solution

The fourth proportional to 108,605.17, 149,875.13 and 66,163.67 is: 91,305.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,605.17 : 149,875.13 = 66,163.67 : x
  2. Step 2: Convert to fraction form
    108,605.17/149,875.13 = 66,163.67/x
  3. Step 3: Cross multiply
    108,605.17x = 149,875.13 × 66,163.67
  4. Step 4: Simplify right side
    108,605.17x = 9,916,288,642.53
  5. Step 5: Solve for x
    x = 9,916,288,642.53/108,605.17
  6. Step 6: Final answer
    x = 91,305.86

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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.