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Finding the Fourth Proportional to 128,450.40, 192,675.60 and 97,346.40

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Solution

The fourth proportional to 128,450.40, 192,675.60 and 97,346.40 is: 146,019.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,450.40 : 192,675.60 = 97,346.40 : x
  2. Step 2: Convert to fraction form
    128,450.40/192,675.60 = 97,346.40/x
  3. Step 3: Cross multiply
    128,450.40x = 192,675.60 × 97,346.40
  4. Step 4: Simplify right side
    128,450.40x = 18,756,276,027.84
  5. Step 5: Solve for x
    x = 18,756,276,027.84/128,450.40
  6. Step 6: Final answer
    x = 146,019.60

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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.