Home / 99,997.96-138,009.36-57,555.60

Finding the Fourth Proportional to 99,997.96, 138,009.36 and 57,555.60

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Solution

The fourth proportional to 99,997.96, 138,009.36 and 57,555.60 is: 79,433.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,997.96 : 138,009.36 = 57,555.60 : x
  2. Step 2: Convert to fraction form
    99,997.96/138,009.36 = 57,555.60/x
  3. Step 3: Cross multiply
    99,997.96x = 138,009.36 × 57,555.60
  4. Step 4: Simplify right side
    99,997.96x = 7,943,211,520.42
  5. Step 5: Solve for x
    x = 7,943,211,520.42/99,997.96
  6. Step 6: Final answer
    x = 79,433.74

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1.5x scale

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.