Home / 145,187.58-200,353.68-81,528.06

Finding the Fourth Proportional to 145,187.58, 200,353.68 and 81,528.06

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Solution

The fourth proportional to 145,187.58, 200,353.68 and 81,528.06 is: 112,505.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,187.58 : 200,353.68 = 81,528.06 : x
  2. Step 2: Convert to fraction form
    145,187.58/200,353.68 = 81,528.06/x
  3. Step 3: Cross multiply
    145,187.58x = 200,353.68 × 81,528.06
  4. Step 4: Simplify right side
    145,187.58x = 16,334,446,844.26
  5. Step 5: Solve for x
    x = 16,334,446,844.26/145,187.58
  6. Step 6: Final answer
    x = 112,505.81

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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.