Home / 154,462,955.40-231,694,433.10-81,651,601.80

Finding the Fourth Proportional to 154,462,955.40, 231,694,433.10 and 81,651,601.80

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Solution

The fourth proportional to 154,462,955.40, 231,694,433.10 and 81,651,601.80 is: 122,477,402.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,462,955.40 : 231,694,433.10 = 81,651,601.80 : x
  2. Step 2: Convert to fraction form
    154,462,955.40/231,694,433.10 = 81,651,601.80/x
  3. Step 3: Cross multiply
    154,462,955.40x = 231,694,433.10 × 81,651,601.80
  4. Step 4: Simplify right side
    154,462,955.40x = 18,918,221,590,757,940
  5. Step 5: Solve for x
    x = 18,918,221,590,757,940/154,462,955.40
  6. Step 6: Final answer
    x = 122,477,402.70

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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.