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Finding the Fourth Proportional to 143,266.80, 215,129.70 and 113,928.60

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Solution

The fourth proportional to 143,266.80, 215,129.70 and 113,928.60 is: 171,075.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,266.80 : 215,129.70 = 113,928.60 : x
  2. Step 2: Convert to fraction form
    143,266.80/215,129.70 = 113,928.60/x
  3. Step 3: Cross multiply
    143,266.80x = 215,129.70 × 113,928.60
  4. Step 4: Simplify right side
    143,266.80x = 24,509,425,539.42
  5. Step 5: Solve for x
    x = 24,509,425,539.42/143,266.80
  6. Step 6: Final answer
    x = 171,075.40

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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.