Home / 210,747.09-290,838.56-120,116.73

Finding the Fourth Proportional to 210,747.09, 290,838.56 and 120,116.73

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Solution

The fourth proportional to 210,747.09, 290,838.56 and 120,116.73 is: 165,765.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,747.09 : 290,838.56 = 120,116.73 : x
  2. Step 2: Convert to fraction form
    210,747.09/290,838.56 = 120,116.73/x
  3. Step 3: Cross multiply
    210,747.09x = 290,838.56 × 120,116.73
  4. Step 4: Simplify right side
    210,747.09x = 34,934,576,184.53
  5. Step 5: Solve for x
    x = 34,934,576,184.53/210,747.09
  6. Step 6: Final answer
    x = 165,765.40

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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.