Home / 128,075.27-192,122.13-49,189.50

Finding the Fourth Proportional to 128,075.27, 192,122.13 and 49,189.50

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Solution

The fourth proportional to 128,075.27, 192,122.13 and 49,189.50 is: 73,787.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,075.27 : 192,122.13 = 49,189.50 : x
  2. Step 2: Convert to fraction form
    128,075.27/192,122.13 = 49,189.50/x
  3. Step 3: Cross multiply
    128,075.27x = 192,122.13 × 49,189.50
  4. Step 4: Simplify right side
    128,075.27x = 9,450,390,307.08
  5. Step 5: Solve for x
    x = 9,450,390,307.08/128,075.27
  6. Step 6: Final answer
    x = 73,787.79

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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.