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Finding the Fourth Proportional to 139,969,190.80, 209,953,786.20 and 59,190,158.80

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Solution

The fourth proportional to 139,969,190.80, 209,953,786.20 and 59,190,158.80 is: 88,785,238.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,190.80 : 209,953,786.20 = 59,190,158.80 : x
  2. Step 2: Convert to fraction form
    139,969,190.80/209,953,786.20 = 59,190,158.80/x
  3. Step 3: Cross multiply
    139,969,190.80x = 209,953,786.20 × 59,190,158.80
  4. Step 4: Simplify right side
    139,969,190.80x = 12,427,197,945,839,248
  5. Step 5: Solve for x
    x = 12,427,197,945,839,248/139,969,190.80
  6. Step 6: Final answer
    x = 88,785,238.20

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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.