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Finding the Fourth Proportional to 75,999.40, 106,661.60 and 75,999.40

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Solution

The fourth proportional to 75,999.40, 106,661.60 and 75,999.40 is: 106,661.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,999.40 : 106,661.60 = 75,999.40 : x
  2. Step 2: Convert to fraction form
    75,999.40/106,661.60 = 75,999.40/x
  3. Step 3: Cross multiply
    75,999.40x = 106,661.60 × 75,999.40
  4. Step 4: Simplify right side
    75,999.40x = 8,106,217,603.04
  5. Step 5: Solve for x
    x = 8,106,217,603.04/75,999.40
  6. Step 6: Final answer
    x = 106,661.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.