Home / 120,854.36-181,128.18-68,293.28

Finding the Fourth Proportional to 120,854.36, 181,128.18 and 68,293.28

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Solution

The fourth proportional to 120,854.36, 181,128.18 and 68,293.28 is: 102,353.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,854.36 : 181,128.18 = 68,293.28 : x
  2. Step 2: Convert to fraction form
    120,854.36/181,128.18 = 68,293.28/x
  3. Step 3: Cross multiply
    120,854.36x = 181,128.18 × 68,293.28
  4. Step 4: Simplify right side
    120,854.36x = 12,369,837,512.63
  5. Step 5: Solve for x
    x = 12,369,837,512.63/120,854.36
  6. Step 6: Final answer
    x = 102,353.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.