Home / 144,642,354.32-199,607,913.76-78,564,142.92

Finding the Fourth Proportional to 144,642,354.32, 199,607,913.76 and 78,564,142.92

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Solution

The fourth proportional to 144,642,354.32, 199,607,913.76 and 78,564,142.92 is: 108,419,312.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,642,354.32 : 199,607,913.76 = 78,564,142.92 : x
  2. Step 2: Convert to fraction form
    144,642,354.32/199,607,913.76 = 78,564,142.92/x
  3. Step 3: Cross multiply
    144,642,354.32x = 199,607,913.76 × 78,564,142.92
  4. Step 4: Simplify right side
    144,642,354.32x = 15,682,024,664,603,674
  5. Step 5: Solve for x
    x = 15,682,024,664,603,674/144,642,354.32
  6. Step 6: Final answer
    x = 108,419,312.85

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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.