Home / 99,077,515.20-148,616,272.80-78,670,180.80

Finding the Fourth Proportional to 99,077,515.20, 148,616,272.80 and 78,670,180.80

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Solution

The fourth proportional to 99,077,515.20, 148,616,272.80 and 78,670,180.80 is: 118,005,271.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,077,515.20 : 148,616,272.80 = 78,670,180.80 : x
  2. Step 2: Convert to fraction form
    99,077,515.20/148,616,272.80 = 78,670,180.80/x
  3. Step 3: Cross multiply
    99,077,515.20x = 148,616,272.80 × 78,670,180.80
  4. Step 4: Simplify right side
    99,077,515.20x = 11,691,669,050,998,122
  5. Step 5: Solve for x
    x = 11,691,669,050,998,122/99,077,515.20
  6. Step 6: Final answer
    x = 118,005,271.20

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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.