Home / 99,420.26-149,131.24-28,342.76

Finding the Fourth Proportional to 99,420.26, 149,131.24 and 28,342.76

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Solution

The fourth proportional to 99,420.26, 149,131.24 and 28,342.76 is: 42,514.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,420.26 : 149,131.24 = 28,342.76 : x
  2. Step 2: Convert to fraction form
    99,420.26/149,131.24 = 28,342.76/x
  3. Step 3: Cross multiply
    99,420.26x = 149,131.24 × 28,342.76
  4. Step 4: Simplify right side
    99,420.26x = 4,226,790,127.31
  5. Step 5: Solve for x
    x = 4,226,790,127.31/99,420.26
  6. Step 6: Final answer
    x = 42,514.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.