Home / 190,257.89-285,389.64-90,428.27

Finding the Fourth Proportional to 190,257.89, 285,389.64 and 90,428.27

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Solution

The fourth proportional to 190,257.89, 285,389.64 and 90,428.27 is: 135,643.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,257.89 : 285,389.64 = 90,428.27 : x
  2. Step 2: Convert to fraction form
    190,257.89/285,389.64 = 90,428.27/x
  3. Step 3: Cross multiply
    190,257.89x = 285,389.64 × 90,428.27
  4. Step 4: Simplify right side
    190,257.89x = 25,807,291,421.12
  5. Step 5: Solve for x
    x = 25,807,291,421.12/190,257.89
  6. Step 6: Final answer
    x = 135,643.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.