Home / 81,913,429.20-122,870,143.80-73,693,808.40

Finding the Fourth Proportional to 81,913,429.20, 122,870,143.80 and 73,693,808.40

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Solution

The fourth proportional to 81,913,429.20, 122,870,143.80 and 73,693,808.40 is: 110,540,712.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,913,429.20 : 122,870,143.80 = 73,693,808.40 : x
  2. Step 2: Convert to fraction form
    81,913,429.20/122,870,143.80 = 73,693,808.40/x
  3. Step 3: Cross multiply
    81,913,429.20x = 122,870,143.80 × 73,693,808.40
  4. Step 4: Simplify right side
    81,913,429.20x = 9,054,768,835,277,648
  5. Step 5: Solve for x
    x = 9,054,768,835,277,648/81,913,429.20
  6. Step 6: Final answer
    x = 110,540,712.60

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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.