Home / 139,378,288.36-209,053,809.78-42,334,838.68

Finding the Fourth Proportional to 139,378,288.36, 209,053,809.78 and 42,334,838.68

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Solution

The fourth proportional to 139,378,288.36, 209,053,809.78 and 42,334,838.68 is: 63,498,120.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,378,288.36 : 209,053,809.78 = 42,334,838.68 : x
  2. Step 2: Convert to fraction form
    139,378,288.36/209,053,809.78 = 42,334,838.68/x
  3. Step 3: Cross multiply
    139,378,288.36x = 209,053,809.78 × 42,334,838.68
  4. Step 4: Simplify right side
    139,378,288.36x = 8,850,259,312,475,706
  5. Step 5: Solve for x
    x = 8,850,259,312,475,706/139,378,288.36
  6. Step 6: Final answer
    x = 63,498,120.24

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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.