Home / 163,128,132.76-225,121,695.05-100,440,395.48

Finding the Fourth Proportional to 163,128,132.76, 225,121,695.05 and 100,440,395.48

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Solution

The fourth proportional to 163,128,132.76, 225,121,695.05 and 100,440,395.48 is: 138,610,745.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,128,132.76 : 225,121,695.05 = 100,440,395.48 : x
  2. Step 2: Convert to fraction form
    163,128,132.76/225,121,695.05 = 100,440,395.48/x
  3. Step 3: Cross multiply
    163,128,132.76x = 225,121,695.05 × 100,440,395.48
  4. Step 4: Simplify right side
    163,128,132.76x = 22,611,312,081,075,452
  5. Step 5: Solve for x
    x = 22,611,312,081,075,452/163,128,132.76
  6. Step 6: Final answer
    x = 138,610,745.42

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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.