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Finding the Fourth Proportional to 139,752,468.40, 209,628,702.60 and 88,860,103.60

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Solution

The fourth proportional to 139,752,468.40, 209,628,702.60 and 88,860,103.60 is: 133,290,155.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,752,468.40 : 209,628,702.60 = 88,860,103.60 : x
  2. Step 2: Convert to fraction form
    139,752,468.40/209,628,702.60 = 88,860,103.60/x
  3. Step 3: Cross multiply
    139,752,468.40x = 209,628,702.60 × 88,860,103.60
  4. Step 4: Simplify right side
    139,752,468.40x = 18,627,628,230,569,588
  5. Step 5: Solve for x
    x = 18,627,628,230,569,588/139,752,468.40
  6. Step 6: Final answer
    x = 133,290,155.40

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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.