Home / 145,641.51-200,997.32-81,123.12

Finding the Fourth Proportional to 145,641.51, 200,997.32 and 81,123.12

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Solution

The fourth proportional to 145,641.51, 200,997.32 and 81,123.12 is: 111,956.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,641.51 : 200,997.32 = 81,123.12 : x
  2. Step 2: Convert to fraction form
    145,641.51/200,997.32 = 81,123.12/x
  3. Step 3: Cross multiply
    145,641.51x = 200,997.32 × 81,123.12
  4. Step 4: Simplify right side
    145,641.51x = 16,305,529,304.42
  5. Step 5: Solve for x
    x = 16,305,529,304.42/145,641.51
  6. Step 6: Final answer
    x = 111,956.61

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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.