Home / 131,382,856.78-181,300,552.22-72,640,911.58

Finding the Fourth Proportional to 131,382,856.78, 181,300,552.22 and 72,640,911.58

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Solution

The fourth proportional to 131,382,856.78, 181,300,552.22 and 72,640,911.58 is: 100,240,150.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,382,856.78 : 181,300,552.22 = 72,640,911.58 : x
  2. Step 2: Convert to fraction form
    131,382,856.78/181,300,552.22 = 72,640,911.58/x
  3. Step 3: Cross multiply
    131,382,856.78x = 181,300,552.22 × 72,640,911.58
  4. Step 4: Simplify right side
    131,382,856.78x = 13,169,837,382,946,544
  5. Step 5: Solve for x
    x = 13,169,837,382,946,544/131,382,856.78
  6. Step 6: Final answer
    x = 100,240,150.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.