Home / 100,193.02-138,360.02-64,445.09

Finding the Fourth Proportional to 100,193.02, 138,360.02 and 64,445.09

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Solution

The fourth proportional to 100,193.02, 138,360.02 and 64,445.09 is: 88,994.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,193.02 : 138,360.02 = 64,445.09 : x
  2. Step 2: Convert to fraction form
    100,193.02/138,360.02 = 64,445.09/x
  3. Step 3: Cross multiply
    100,193.02x = 138,360.02 × 64,445.09
  4. Step 4: Simplify right side
    100,193.02x = 8,916,622,927.28
  5. Step 5: Solve for x
    x = 8,916,622,927.28/100,193.02
  6. Step 6: Final answer
    x = 88,994.45

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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.