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Finding the Fourth Proportional to 134,805.44, 200,824.40 and 128,740.16

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Solution

The fourth proportional to 134,805.44, 200,824.40 and 128,740.16 is: 191,788.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,805.44 : 200,824.40 = 128,740.16 : x
  2. Step 2: Convert to fraction form
    134,805.44/200,824.40 = 128,740.16/x
  3. Step 3: Cross multiply
    134,805.44x = 200,824.40 × 128,740.16
  4. Step 4: Simplify right side
    134,805.44x = 25,854,165,387.90
  5. Step 5: Solve for x
    x = 25,854,165,387.90/134,805.44
  6. Step 6: Final answer
    x = 191,788.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.