Home / 145,169.36-200,283.72-81,498.32

Finding the Fourth Proportional to 145,169.36, 200,283.72 and 81,498.32

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Solution

The fourth proportional to 145,169.36, 200,283.72 and 81,498.32 is: 112,439.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,169.36 : 200,283.72 = 81,498.32 : x
  2. Step 2: Convert to fraction form
    145,169.36/200,283.72 = 81,498.32/x
  3. Step 3: Cross multiply
    145,169.36x = 200,283.72 × 81,498.32
  4. Step 4: Simplify right side
    145,169.36x = 16,322,786,703.35
  5. Step 5: Solve for x
    x = 16,322,786,703.35/145,169.36
  6. Step 6: Final answer
    x = 112,439.61

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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.