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Finding the Fourth Proportional to 210,168.55, 290,039 and 119,537.56

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Solution

The fourth proportional to 210,168.55, 290,039 and 119,537.56 is: 164,965.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,168.55 : 290,039 = 119,537.56 : x
  2. Step 2: Convert to fraction form
    210,168.55/290,039 = 119,537.56/x
  3. Step 3: Cross multiply
    210,168.55x = 290,039 × 119,537.56
  4. Step 4: Simplify right side
    210,168.55x = 34,670,554,364.84
  5. Step 5: Solve for x
    x = 34,670,554,364.84/210,168.55
  6. Step 6: Final answer
    x = 164,965.47

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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.