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Finding the Fourth Proportional to 190,450.92, 285,430.35 and 90,641.70

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Solution

The fourth proportional to 190,450.92, 285,430.35 and 90,641.70 is: 135,845.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,450.92 : 285,430.35 = 90,641.70 : x
  2. Step 2: Convert to fraction form
    190,450.92/285,430.35 = 90,641.70/x
  3. Step 3: Cross multiply
    190,450.92x = 285,430.35 × 90,641.70
  4. Step 4: Simplify right side
    190,450.92x = 25,871,892,155.60
  5. Step 5: Solve for x
    x = 25,871,892,155.60/190,450.92
  6. Step 6: Final answer
    x = 135,845.46

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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.