Home / 203,145,525.91-280,443,968.18-128,882,004.31

Finding the Fourth Proportional to 203,145,525.91, 280,443,968.18 and 128,882,004.31

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Solution

The fourth proportional to 203,145,525.91, 280,443,968.18 and 128,882,004.31 is: 177,922,602.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,145,525.91 : 280,443,968.18 = 128,882,004.31 : x
  2. Step 2: Convert to fraction form
    203,145,525.91/280,443,968.18 = 128,882,004.31/x
  3. Step 3: Cross multiply
    203,145,525.91x = 280,443,968.18 × 128,882,004.31
  4. Step 4: Simplify right side
    203,145,525.91x = 36,144,180,715,688,264
  5. Step 5: Solve for x
    x = 36,144,180,715,688,264/203,145,525.91
  6. Step 6: Final answer
    x = 177,922,602.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.