Home / 185,400.93-255,853.58-100,518.21

Finding the Fourth Proportional to 185,400.93, 255,853.58 and 100,518.21

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Solution

The fourth proportional to 185,400.93, 255,853.58 and 100,518.21 is: 138,715.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,400.93 : 255,853.58 = 100,518.21 : x
  2. Step 2: Convert to fraction form
    185,400.93/255,853.58 = 100,518.21/x
  3. Step 3: Cross multiply
    185,400.93x = 255,853.58 × 100,518.21
  4. Step 4: Simplify right side
    185,400.93x = 25,717,943,381.10
  5. Step 5: Solve for x
    x = 25,717,943,381.10/185,400.93
  6. Step 6: Final answer
    x = 138,715.29

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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.