Home / 154,426,137.90-213,107,245.80-83,861,131.20

Finding the Fourth Proportional to 154,426,137.90, 213,107,245.80 and 83,861,131.20

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Solution

The fourth proportional to 154,426,137.90, 213,107,245.80 and 83,861,131.20 is: 115,727,913.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,426,137.90 : 213,107,245.80 = 83,861,131.20 : x
  2. Step 2: Convert to fraction form
    154,426,137.90/213,107,245.80 = 83,861,131.20/x
  3. Step 3: Cross multiply
    154,426,137.90x = 213,107,245.80 × 83,861,131.20
  4. Step 4: Simplify right side
    154,426,137.90x = 17,871,414,699,704,450
  5. Step 5: Solve for x
    x = 17,871,414,699,704,450/154,426,137.90
  6. Step 6: Final answer
    x = 115,727,913.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.