Home / 145,582.92-200,903.81-81,921.78

Finding the Fourth Proportional to 145,582.92, 200,903.81 and 81,921.78

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Solution

The fourth proportional to 145,582.92, 200,903.81 and 81,921.78 is: 113,051.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,582.92 : 200,903.81 = 81,921.78 : x
  2. Step 2: Convert to fraction form
    145,582.92/200,903.81 = 81,921.78/x
  3. Step 3: Cross multiply
    145,582.92x = 200,903.81 × 81,921.78
  4. Step 4: Simplify right side
    145,582.92x = 16,458,397,314.37
  5. Step 5: Solve for x
    x = 16,458,397,314.37/145,582.92
  6. Step 6: Final answer
    x = 113,051.70

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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.