Home / 207,131.60-285,690.12-135,396.56

Finding the Fourth Proportional to 207,131.60, 285,690.12 and 135,396.56

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Solution

The fourth proportional to 207,131.60, 285,690.12 and 135,396.56 is: 186,748.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,131.60 : 285,690.12 = 135,396.56 : x
  2. Step 2: Convert to fraction form
    207,131.60/285,690.12 = 135,396.56/x
  3. Step 3: Cross multiply
    207,131.60x = 285,690.12 × 135,396.56
  4. Step 4: Simplify right side
    207,131.60x = 38,681,459,473.99
  5. Step 5: Solve for x
    x = 38,681,459,473.99/207,131.60
  6. Step 6: Final answer
    x = 186,748.23

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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.