Home / 172,635,028.20-258,725,792.52-81,784,598.76

Finding the Fourth Proportional to 172,635,028.20, 258,725,792.52 and 81,784,598.76

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Solution

The fourth proportional to 172,635,028.20, 258,725,792.52 and 81,784,598.76 is: 122,569,477.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,635,028.20 : 258,725,792.52 = 81,784,598.76 : x
  2. Step 2: Convert to fraction form
    172,635,028.20/258,725,792.52 = 81,784,598.76/x
  3. Step 3: Cross multiply
    172,635,028.20x = 258,725,792.52 × 81,784,598.76
  4. Step 4: Simplify right side
    172,635,028.20x = 21,159,785,130,111,212
  5. Step 5: Solve for x
    x = 21,159,785,130,111,212/172,635,028.20
  6. Step 6: Final answer
    x = 122,569,477.07

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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.