Home / 120,181.86-165,871.77-72,435.26

Finding the Fourth Proportional to 120,181.86, 165,871.77 and 72,435.26

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Solution

The fourth proportional to 120,181.86, 165,871.77 and 72,435.26 is: 99,973.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,181.86 : 165,871.77 = 72,435.26 : x
  2. Step 2: Convert to fraction form
    120,181.86/165,871.77 = 72,435.26/x
  3. Step 3: Cross multiply
    120,181.86x = 165,871.77 × 72,435.26
  4. Step 4: Simplify right side
    120,181.86x = 12,014,964,929.66
  5. Step 5: Solve for x
    x = 12,014,964,929.66/120,181.86
  6. Step 6: Final answer
    x = 99,973.20

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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.