Home / 145,327.80-200,557.44-81,664.32

Finding the Fourth Proportional to 145,327.80, 200,557.44 and 81,664.32

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Solution

The fourth proportional to 145,327.80, 200,557.44 and 81,664.32 is: 112,699.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,327.80 : 200,557.44 = 81,664.32 : x
  2. Step 2: Convert to fraction form
    145,327.80/200,557.44 = 81,664.32/x
  3. Step 3: Cross multiply
    145,327.80x = 200,557.44 × 81,664.32
  4. Step 4: Simplify right side
    145,327.80x = 16,378,386,958.54
  5. Step 5: Solve for x
    x = 16,378,386,958.54/145,327.80
  6. Step 6: Final answer
    x = 112,699.61

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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.