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Finding the Fourth Proportional to 85,392.40, 127,858.20 and 85,392.40

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Solution

The fourth proportional to 85,392.40, 127,858.20 and 85,392.40 is: 127,858.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,392.40 : 127,858.20 = 85,392.40 : x
  2. Step 2: Convert to fraction form
    85,392.40/127,858.20 = 85,392.40/x
  3. Step 3: Cross multiply
    85,392.40x = 127,858.20 × 85,392.40
  4. Step 4: Simplify right side
    85,392.40x = 10,918,118,557.68
  5. Step 5: Solve for x
    x = 10,918,118,557.68/85,392.40
  6. Step 6: Final answer
    x = 127,858.20

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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.