Home / 144,642,356.32-199,607,916.52-78,564,144.92

Finding the Fourth Proportional to 144,642,356.32, 199,607,916.52 and 78,564,144.92

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Solution

The fourth proportional to 144,642,356.32, 199,607,916.52 and 78,564,144.92 is: 108,419,315.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,642,356.32 : 199,607,916.52 = 78,564,144.92 : x
  2. Step 2: Convert to fraction form
    144,642,356.32/199,607,916.52 = 78,564,144.92/x
  3. Step 3: Cross multiply
    144,642,356.32x = 199,607,916.52 × 78,564,144.92
  4. Step 4: Simplify right side
    144,642,356.32x = 15,682,025,280,656,544
  5. Step 5: Solve for x
    x = 15,682,025,280,656,544/144,642,356.32
  6. Step 6: Final answer
    x = 108,419,315.61

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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.