Home / 120,576,139.20-180,864,208.80-115,873,214.40

Finding the Fourth Proportional to 120,576,139.20, 180,864,208.80 and 115,873,214.40

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Solution

The fourth proportional to 120,576,139.20, 180,864,208.80 and 115,873,214.40 is: 173,809,821.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,576,139.20 : 180,864,208.80 = 115,873,214.40 : x
  2. Step 2: Convert to fraction form
    120,576,139.20/180,864,208.80 = 115,873,214.40/x
  3. Step 3: Cross multiply
    120,576,139.20x = 180,864,208.80 × 115,873,214.40
  4. Step 4: Simplify right side
    120,576,139.20x = 20,957,317,243,568,768
  5. Step 5: Solve for x
    x = 20,957,317,243,568,768/120,576,139.20
  6. Step 6: Final answer
    x = 173,809,821.60

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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.