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Finding the Fourth Proportional to 139,969,198.80, 209,879,148.60 and 59,098,798.80

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Solution

The fourth proportional to 139,969,198.80, 209,879,148.60 and 59,098,798.80 is: 88,616,679.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,198.80 : 209,879,148.60 = 59,098,798.80 : x
  2. Step 2: Convert to fraction form
    139,969,198.80/209,879,148.60 = 59,098,798.80/x
  3. Step 3: Cross multiply
    139,969,198.80x = 209,879,148.60 × 59,098,798.80
  4. Step 4: Simplify right side
    139,969,198.80x = 12,403,605,575,426,700
  5. Step 5: Solve for x
    x = 12,403,605,575,426,700/139,969,198.80
  6. Step 6: Final answer
    x = 88,616,679.11

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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.