Home / 145,303.56-200,513.34-81,644.04

Finding the Fourth Proportional to 145,303.56, 200,513.34 and 81,644.04

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Solution

The fourth proportional to 145,303.56, 200,513.34 and 81,644.04 is: 112,665.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,303.56 : 200,513.34 = 81,644.04 : x
  2. Step 2: Convert to fraction form
    145,303.56/200,513.34 = 81,644.04/x
  3. Step 3: Cross multiply
    145,303.56x = 200,513.34 × 81,644.04
  4. Step 4: Simplify right side
    145,303.56x = 16,370,719,151.49
  5. Step 5: Solve for x
    x = 16,370,719,151.49/145,303.56
  6. Step 6: Final answer
    x = 112,665.64

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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.