Home / 219,990,712.05-329,934,874.77-81,881,360.91

Finding the Fourth Proportional to 219,990,712.05, 329,934,874.77 and 81,881,360.91

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Solution

The fourth proportional to 219,990,712.05, 329,934,874.77 and 81,881,360.91 is: 122,802,987.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,990,712.05 : 329,934,874.77 = 81,881,360.91 : x
  2. Step 2: Convert to fraction form
    219,990,712.05/329,934,874.77 = 81,881,360.91/x
  3. Step 3: Cross multiply
    219,990,712.05x = 329,934,874.77 × 81,881,360.91
  4. Step 4: Simplify right side
    219,990,712.05x = 27,015,516,557,838,020
  5. Step 5: Solve for x
    x = 27,015,516,557,838,020/219,990,712.05
  6. Step 6: Final answer
    x = 122,802,987.03

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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.