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Finding the Fourth Proportional to 145,343.92, 200,492.70 and 91,536.52

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Solution

The fourth proportional to 145,343.92, 200,492.70 and 91,536.52 is: 126,268.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,343.92 : 200,492.70 = 91,536.52 : x
  2. Step 2: Convert to fraction form
    145,343.92/200,492.70 = 91,536.52/x
  3. Step 3: Cross multiply
    145,343.92x = 200,492.70 × 91,536.52
  4. Step 4: Simplify right side
    145,343.92x = 18,352,404,043.40
  5. Step 5: Solve for x
    x = 18,352,404,043.40/145,343.92
  6. Step 6: Final answer
    x = 126,268.81

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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.