Home / 120,162.48-165,844.80-69,890.64

Finding the Fourth Proportional to 120,162.48, 165,844.80 and 69,890.64

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Solution

The fourth proportional to 120,162.48, 165,844.80 and 69,890.64 is: 96,461.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,162.48 : 165,844.80 = 69,890.64 : x
  2. Step 2: Convert to fraction form
    120,162.48/165,844.80 = 69,890.64/x
  3. Step 3: Cross multiply
    120,162.48x = 165,844.80 × 69,890.64
  4. Step 4: Simplify right side
    120,162.48x = 11,590,999,212.67
  5. Step 5: Solve for x
    x = 11,590,999,212.67/120,162.48
  6. Step 6: Final answer
    x = 96,461.05

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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.