Home / 185,018.08-255,324.92-100,135.12

Finding the Fourth Proportional to 185,018.08, 255,324.92 and 100,135.12

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Solution

The fourth proportional to 185,018.08, 255,324.92 and 100,135.12 is: 138,186.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,018.08 : 255,324.92 = 100,135.12 : x
  2. Step 2: Convert to fraction form
    185,018.08/255,324.92 = 100,135.12/x
  3. Step 3: Cross multiply
    185,018.08x = 255,324.92 × 100,135.12
  4. Step 4: Simplify right side
    185,018.08x = 25,566,991,503.19
  5. Step 5: Solve for x
    x = 25,566,991,503.19/185,018.08
  6. Step 6: Final answer
    x = 138,186.45

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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.