Home / 139,968,687.70-209,953,031.55-120,821,065.30

Finding the Fourth Proportional to 139,968,687.70, 209,953,031.55 and 120,821,065.30

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Solution

The fourth proportional to 139,968,687.70, 209,953,031.55 and 120,821,065.30 is: 181,231,597.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,687.70 : 209,953,031.55 = 120,821,065.30 : x
  2. Step 2: Convert to fraction form
    139,968,687.70/209,953,031.55 = 120,821,065.30/x
  3. Step 3: Cross multiply
    139,968,687.70x = 209,953,031.55 × 120,821,065.30
  4. Step 4: Simplify right side
    139,968,687.70x = 25,366,748,934,835,512
  5. Step 5: Solve for x
    x = 25,366,748,934,835,512/139,968,687.70
  6. Step 6: Final answer
    x = 181,231,597.95

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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.