Home / 100,102,281.40-150,153,422.10-78,603,196.60

Finding the Fourth Proportional to 100,102,281.40, 150,153,422.10 and 78,603,196.60

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Solution

The fourth proportional to 100,102,281.40, 150,153,422.10 and 78,603,196.60 is: 117,904,794.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,102,281.40 : 150,153,422.10 = 78,603,196.60 : x
  2. Step 2: Convert to fraction form
    100,102,281.40/150,153,422.10 = 78,603,196.60/x
  3. Step 3: Cross multiply
    100,102,281.40x = 150,153,422.10 × 78,603,196.60
  4. Step 4: Simplify right side
    100,102,281.40x = 11,802,538,957,489,084
  5. Step 5: Solve for x
    x = 11,802,538,957,489,084/100,102,281.40
  6. Step 6: Final answer
    x = 117,904,794.90

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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.