Home / 172,601,660.81-258,900,719.43-99,772,100.43

Finding the Fourth Proportional to 172,601,660.81, 258,900,719.43 and 99,772,100.43

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Solution

The fourth proportional to 172,601,660.81, 258,900,719.43 and 99,772,100.43 is: 149,657,126.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,601,660.81 : 258,900,719.43 = 99,772,100.43 : x
  2. Step 2: Convert to fraction form
    172,601,660.81/258,900,719.43 = 99,772,100.43/x
  3. Step 3: Cross multiply
    172,601,660.81x = 258,900,719.43 × 99,772,100.43
  4. Step 4: Simplify right side
    172,601,660.81x = 25,831,068,580,743,360
  5. Step 5: Solve for x
    x = 25,831,068,580,743,360/172,601,660.81
  6. Step 6: Final answer
    x = 149,657,126.47

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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.