Home / 117,128.10-161,633.22-66,140.04

Finding the Fourth Proportional to 117,128.10, 161,633.22 and 66,140.04

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Solution

The fourth proportional to 117,128.10, 161,633.22 and 66,140.04 is: 91,271.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,128.10 : 161,633.22 = 66,140.04 : x
  2. Step 2: Convert to fraction form
    117,128.10/161,633.22 = 66,140.04/x
  3. Step 3: Cross multiply
    117,128.10x = 161,633.22 × 66,140.04
  4. Step 4: Simplify right side
    117,128.10x = 10,690,427,636.13
  5. Step 5: Solve for x
    x = 10,690,427,636.13/117,128.10
  6. Step 6: Final answer
    x = 91,271.25

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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.