Home / 210,778.40-290,881.68-120,148.04

Finding the Fourth Proportional to 210,778.40, 290,881.68 and 120,148.04

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Solution

The fourth proportional to 210,778.40, 290,881.68 and 120,148.04 is: 165,808.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,778.40 : 290,881.68 = 120,148.04 : x
  2. Step 2: Convert to fraction form
    210,778.40/290,881.68 = 120,148.04/x
  3. Step 3: Cross multiply
    210,778.40x = 290,881.68 × 120,148.04
  4. Step 4: Simplify right side
    210,778.40x = 34,948,863,723.91
  5. Step 5: Solve for x
    x = 34,948,863,723.91/210,778.40
  6. Step 6: Final answer
    x = 165,808.56

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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.