Home / 190,518.96-285,720-131,732.40

Finding the Fourth Proportional to 190,518.96, 285,720 and 131,732.40

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Solution

The fourth proportional to 190,518.96, 285,720 and 131,732.40 is: 197,558.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,518.96 : 285,720 = 131,732.40 : x
  2. Step 2: Convert to fraction form
    190,518.96/285,720 = 131,732.40/x
  3. Step 3: Cross multiply
    190,518.96x = 285,720 × 131,732.40
  4. Step 4: Simplify right side
    190,518.96x = 37,638,581,328
  5. Step 5: Solve for x
    x = 37,638,581,328/190,518.96
  6. Step 6: Final answer
    x = 197,558.19

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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.