Home / 210,743.28-290,833.74-120,113.55

Finding the Fourth Proportional to 210,743.28, 290,833.74 and 120,113.55

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Solution

The fourth proportional to 210,743.28, 290,833.74 and 120,113.55 is: 165,761.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,743.28 : 290,833.74 = 120,113.55 : x
  2. Step 2: Convert to fraction form
    210,743.28/290,833.74 = 120,113.55/x
  3. Step 3: Cross multiply
    210,743.28x = 290,833.74 × 120,113.55
  4. Step 4: Simplify right side
    210,743.28x = 34,933,072,971.18
  5. Step 5: Solve for x
    x = 34,933,072,971.18/210,743.28
  6. Step 6: Final answer
    x = 165,761.27

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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.