Home / 139,969,271.70-209,953,907.55-86,146,910.10

Finding the Fourth Proportional to 139,969,271.70, 209,953,907.55 and 86,146,910.10

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Solution

The fourth proportional to 139,969,271.70, 209,953,907.55 and 86,146,910.10 is: 129,220,365.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,271.70 : 209,953,907.55 = 86,146,910.10 : x
  2. Step 2: Convert to fraction form
    139,969,271.70/209,953,907.55 = 86,146,910.10/x
  3. Step 3: Cross multiply
    139,969,271.70x = 209,953,907.55 × 86,146,910.10
  4. Step 4: Simplify right side
    139,969,271.70x = 18,086,880,398,853,560
  5. Step 5: Solve for x
    x = 18,086,880,398,853,560/139,969,271.70
  6. Step 6: Final answer
    x = 129,220,365.15

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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.