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Finding the Fourth Proportional to 146,389.50, 202,017.75 and 79,321.50

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Solution

The fourth proportional to 146,389.50, 202,017.75 and 79,321.50 is: 109,463.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,389.50 : 202,017.75 = 79,321.50 : x
  2. Step 2: Convert to fraction form
    146,389.50/202,017.75 = 79,321.50/x
  3. Step 3: Cross multiply
    146,389.50x = 202,017.75 × 79,321.50
  4. Step 4: Simplify right side
    146,389.50x = 16,024,350,956.63
  5. Step 5: Solve for x
    x = 16,024,350,956.63/146,389.50
  6. Step 6: Final answer
    x = 109,463.80

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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.