Home / 120,421.69-166,181.93-72,675.04

Finding the Fourth Proportional to 120,421.69, 166,181.93 and 72,675.04

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Solution

The fourth proportional to 120,421.69, 166,181.93 and 72,675.04 is: 100,291.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,421.69 : 166,181.93 = 72,675.04 : x
  2. Step 2: Convert to fraction form
    120,421.69/166,181.93 = 72,675.04/x
  3. Step 3: Cross multiply
    120,421.69x = 166,181.93 × 72,675.04
  4. Step 4: Simplify right side
    120,421.69x = 12,077,277,514.24
  5. Step 5: Solve for x
    x = 12,077,277,514.24/120,421.69
  6. Step 6: Final answer
    x = 100,291.55

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1.5x scale

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.