Home / 144,178,701.10-198,967,562.80-78,099,199.38

Finding the Fourth Proportional to 144,178,701.10, 198,967,562.80 and 78,099,199.38

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Solution

The fourth proportional to 144,178,701.10, 198,967,562.80 and 78,099,199.38 is: 107,777,412.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,178,701.10 : 198,967,562.80 = 78,099,199.38 : x
  2. Step 2: Convert to fraction form
    144,178,701.10/198,967,562.80 = 78,099,199.38/x
  3. Step 3: Cross multiply
    144,178,701.10x = 198,967,562.80 × 78,099,199.38
  4. Step 4: Simplify right side
    144,178,701.10x = 15,539,207,357,074,624
  5. Step 5: Solve for x
    x = 15,539,207,357,074,624/144,178,701.10
  6. Step 6: Final answer
    x = 107,777,412.61

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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.