Home / 145,408.91-200,662.32-81,746.69

Finding the Fourth Proportional to 145,408.91, 200,662.32 and 81,746.69

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Solution

The fourth proportional to 145,408.91, 200,662.32 and 81,746.69 is: 112,809.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,408.91 : 200,662.32 = 81,746.69 : x
  2. Step 2: Convert to fraction form
    145,408.91/200,662.32 = 81,746.69/x
  3. Step 3: Cross multiply
    145,408.91x = 200,662.32 × 81,746.69
  4. Step 4: Simplify right side
    145,408.91x = 16,403,479,464.41
  5. Step 5: Solve for x
    x = 16,403,479,464.41/145,408.91
  6. Step 6: Final answer
    x = 112,809.32

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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.