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Finding the Fourth Proportional to 190,434.80, 285,652.20 and 97,122.80

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Solution

The fourth proportional to 190,434.80, 285,652.20 and 97,122.80 is: 145,684.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,434.80 : 285,652.20 = 97,122.80 : x
  2. Step 2: Convert to fraction form
    190,434.80/285,652.20 = 97,122.80/x
  3. Step 3: Cross multiply
    190,434.80x = 285,652.20 × 97,122.80
  4. Step 4: Simplify right side
    190,434.80x = 27,743,341,490.16
  5. Step 5: Solve for x
    x = 27,743,341,490.16/190,434.80
  6. Step 6: Final answer
    x = 145,684.20

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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.