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Finding the Fourth Proportional to 171,938.40, 257,907.60 and 134,613.60

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Solution

The fourth proportional to 171,938.40, 257,907.60 and 134,613.60 is: 201,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,938.40 : 257,907.60 = 134,613.60 : x
  2. Step 2: Convert to fraction form
    171,938.40/257,907.60 = 134,613.60/x
  3. Step 3: Cross multiply
    171,938.40x = 257,907.60 × 134,613.60
  4. Step 4: Simplify right side
    171,938.40x = 34,717,870,503.36
  5. Step 5: Solve for x
    x = 34,717,870,503.36/171,938.40
  6. Step 6: Final answer
    x = 201,920.40

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1.5x scale

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.