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Finding the Fourth Proportional to 143,611.80, 215,417.70 and 113,868.60

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Solution

The fourth proportional to 143,611.80, 215,417.70 and 113,868.60 is: 170,802.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,611.80 : 215,417.70 = 113,868.60 : x
  2. Step 2: Convert to fraction form
    143,611.80/215,417.70 = 113,868.60/x
  3. Step 3: Cross multiply
    143,611.80x = 215,417.70 × 113,868.60
  4. Step 4: Simplify right side
    143,611.80x = 24,529,311,914.22
  5. Step 5: Solve for x
    x = 24,529,311,914.22/143,611.80
  6. Step 6: Final answer
    x = 170,802.90

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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.