Home / 142,774.80-213,701.40-131,715.60

Finding the Fourth Proportional to 142,774.80, 213,701.40 and 131,715.60

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Solution

The fourth proportional to 142,774.80, 213,701.40 and 131,715.60 is: 197,148.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,774.80 : 213,701.40 = 131,715.60 : x
  2. Step 2: Convert to fraction form
    142,774.80/213,701.40 = 131,715.60/x
  3. Step 3: Cross multiply
    142,774.80x = 213,701.40 × 131,715.60
  4. Step 4: Simplify right side
    142,774.80x = 28,147,808,121.84
  5. Step 5: Solve for x
    x = 28,147,808,121.84/142,774.80
  6. Step 6: Final answer
    x = 197,148.29

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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.