Home / 112,440,969.20-168,288,205.80-81,648,009.20

Finding the Fourth Proportional to 112,440,969.20, 168,288,205.80 and 81,648,009.20

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Solution

The fourth proportional to 112,440,969.20, 168,288,205.80 and 81,648,009.20 is: 122,200,983.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,440,969.20 : 168,288,205.80 = 81,648,009.20 : x
  2. Step 2: Convert to fraction form
    112,440,969.20/168,288,205.80 = 81,648,009.20/x
  3. Step 3: Cross multiply
    112,440,969.20x = 168,288,205.80 × 81,648,009.20
  4. Step 4: Simplify right side
    112,440,969.20x = 13,740,396,975,409,894
  5. Step 5: Solve for x
    x = 13,740,396,975,409,894/112,440,969.20
  6. Step 6: Final answer
    x = 122,200,983.09

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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.