Home / 210,736.72-290,728.47-138,157.04

Finding the Fourth Proportional to 210,736.72, 290,728.47 and 138,157.04

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Solution

The fourth proportional to 210,736.72, 290,728.47 and 138,157.04 is: 190,598.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,736.72 : 290,728.47 = 138,157.04 : x
  2. Step 2: Convert to fraction form
    210,736.72/290,728.47 = 138,157.04/x
  3. Step 3: Cross multiply
    210,736.72x = 290,728.47 × 138,157.04
  4. Step 4: Simplify right side
    210,736.72x = 40,166,186,103.84
  5. Step 5: Solve for x
    x = 40,166,186,103.84/210,736.72
  6. Step 6: Final answer
    x = 190,598.89

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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.