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Finding the Fourth Proportional to 143,137.10, 200,129.50 and 143,137.10

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Solution

The fourth proportional to 143,137.10, 200,129.50 and 143,137.10 is: 200,129.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,137.10 : 200,129.50 = 143,137.10 : x
  2. Step 2: Convert to fraction form
    143,137.10/200,129.50 = 143,137.10/x
  3. Step 3: Cross multiply
    143,137.10x = 200,129.50 × 143,137.10
  4. Step 4: Simplify right side
    143,137.10x = 28,645,956,254.45
  5. Step 5: Solve for x
    x = 28,645,956,254.45/143,137.10
  6. Step 6: Final answer
    x = 200,129.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.