Home / 89,643,964.20-134,465,946.30-81,991,213.80

Finding the Fourth Proportional to 89,643,964.20, 134,465,946.30 and 81,991,213.80

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Solution

The fourth proportional to 89,643,964.20, 134,465,946.30 and 81,991,213.80 is: 122,986,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,643,964.20 : 134,465,946.30 = 81,991,213.80 : x
  2. Step 2: Convert to fraction form
    89,643,964.20/134,465,946.30 = 81,991,213.80/x
  3. Step 3: Cross multiply
    89,643,964.20x = 134,465,946.30 × 81,991,213.80
  4. Step 4: Simplify right side
    89,643,964.20x = 11,025,026,151,902,620
  5. Step 5: Solve for x
    x = 11,025,026,151,902,620/89,643,964.20
  6. Step 6: Final answer
    x = 122,986,820.70

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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.