Home / 163,128,137.28-225,121,701.24-100,440,399.96

Finding the Fourth Proportional to 163,128,137.28, 225,121,701.24 and 100,440,399.96

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Solution

The fourth proportional to 163,128,137.28, 225,121,701.24 and 100,440,399.96 is: 138,610,751.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,128,137.28 : 225,121,701.24 = 100,440,399.96 : x
  2. Step 2: Convert to fraction form
    163,128,137.28/225,121,701.24 = 100,440,399.96/x
  3. Step 3: Cross multiply
    163,128,137.28x = 225,121,701.24 × 100,440,399.96
  4. Step 4: Simplify right side
    163,128,137.28x = 22,611,313,712,221,228
  5. Step 5: Solve for x
    x = 22,611,313,712,221,228/163,128,137.28
  6. Step 6: Final answer
    x = 138,610,751.58

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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.