Home / 142,441,765.20-213,886,596.60-81,975,589.20

Finding the Fourth Proportional to 142,441,765.20, 213,886,596.60 and 81,975,589.20

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Solution

The fourth proportional to 142,441,765.20, 213,886,596.60 and 81,975,589.20 is: 123,092,266.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,441,765.20 : 213,886,596.60 = 81,975,589.20 : x
  2. Step 2: Convert to fraction form
    142,441,765.20/213,886,596.60 = 81,975,589.20/x
  3. Step 3: Cross multiply
    142,441,765.20x = 213,886,596.60 × 81,975,589.20
  4. Step 4: Simplify right side
    142,441,765.20x = 17,533,479,778,267,716
  5. Step 5: Solve for x
    x = 17,533,479,778,267,716/142,441,765.20
  6. Step 6: Final answer
    x = 123,092,266.89

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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.