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Finding the Fourth Proportional to 98,935, 136,538.94 and 54,231.64

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Solution

The fourth proportional to 98,935, 136,538.94 and 54,231.64 is: 74,844.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,935 : 136,538.94 = 54,231.64 : x
  2. Step 2: Convert to fraction form
    98,935/136,538.94 = 54,231.64/x
  3. Step 3: Cross multiply
    98,935x = 136,538.94 × 54,231.64
  4. Step 4: Simplify right side
    98,935x = 7,404,730,640.06
  5. Step 5: Solve for x
    x = 7,404,730,640.06/98,935
  6. Step 6: Final answer
    x = 74,844.40

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1.5x scale

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.