Home / 128,723,205.20-193,084,807.80-103,214,037.20

Finding the Fourth Proportional to 128,723,205.20, 193,084,807.80 and 103,214,037.20

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Solution

The fourth proportional to 128,723,205.20, 193,084,807.80 and 103,214,037.20 is: 154,821,055.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,723,205.20 : 193,084,807.80 = 103,214,037.20 : x
  2. Step 2: Convert to fraction form
    128,723,205.20/193,084,807.80 = 103,214,037.20/x
  3. Step 3: Cross multiply
    128,723,205.20x = 193,084,807.80 × 103,214,037.20
  4. Step 4: Simplify right side
    128,723,205.20x = 19,929,062,535,024,052
  5. Step 5: Solve for x
    x = 19,929,062,535,024,052/128,723,205.20
  6. Step 6: Final answer
    x = 154,821,055.80

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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.