Home / 100,556.10-149,945.92-99,655.38

Finding the Fourth Proportional to 100,556.10, 149,945.92 and 99,655.38

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Solution

The fourth proportional to 100,556.10, 149,945.92 and 99,655.38 is: 148,602.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,556.10 : 149,945.92 = 99,655.38 : x
  2. Step 2: Convert to fraction form
    100,556.10/149,945.92 = 99,655.38/x
  3. Step 3: Cross multiply
    100,556.10x = 149,945.92 × 99,655.38
  4. Step 4: Simplify right side
    100,556.10x = 14,942,917,637.05
  5. Step 5: Solve for x
    x = 14,942,917,637.05/100,556.10
  6. Step 6: Final answer
    x = 148,602.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.