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Finding the Fourth Proportional to 128,059.40, 192,089.10 and 96,955.40

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Solution

The fourth proportional to 128,059.40, 192,089.10 and 96,955.40 is: 145,433.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,059.40 : 192,089.10 = 96,955.40 : x
  2. Step 2: Convert to fraction form
    128,059.40/192,089.10 = 96,955.40/x
  3. Step 3: Cross multiply
    128,059.40x = 192,089.10 × 96,955.40
  4. Step 4: Simplify right side
    128,059.40x = 18,624,075,526.14
  5. Step 5: Solve for x
    x = 18,624,075,526.14/128,059.40
  6. Step 6: Final answer
    x = 145,433.10

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Similar ratio
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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.