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Finding the Fourth Proportional to 145,017.92, 200,121.72 and 80,483.41

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Solution

The fourth proportional to 145,017.92, 200,121.72 and 80,483.41 is: 111,065.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,017.92 : 200,121.72 = 80,483.41 : x
  2. Step 2: Convert to fraction form
    145,017.92/200,121.72 = 80,483.41/x
  3. Step 3: Cross multiply
    145,017.92x = 200,121.72 × 80,483.41
  4. Step 4: Simplify right side
    145,017.92x = 16,106,478,389.00
  5. Step 5: Solve for x
    x = 16,106,478,389.00/145,017.92
  6. Step 6: Final answer
    x = 111,065.43

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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.