Home / 134,431.20-201,646.80-128,672.10

Finding the Fourth Proportional to 134,431.20, 201,646.80 and 128,672.10

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Solution

The fourth proportional to 134,431.20, 201,646.80 and 128,672.10 is: 193,008.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,431.20 : 201,646.80 = 128,672.10 : x
  2. Step 2: Convert to fraction form
    134,431.20/201,646.80 = 128,672.10/x
  3. Step 3: Cross multiply
    134,431.20x = 201,646.80 × 128,672.10
  4. Step 4: Simplify right side
    134,431.20x = 25,946,317,214.28
  5. Step 5: Solve for x
    x = 25,946,317,214.28/134,431.20
  6. Step 6: Final answer
    x = 193,008.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.