Home / 128,271.60-192,428.46-39,525.12

Finding the Fourth Proportional to 128,271.60, 192,428.46 and 39,525.12

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Solution

The fourth proportional to 128,271.60, 192,428.46 and 39,525.12 is: 59,294.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,271.60 : 192,428.46 = 39,525.12 : x
  2. Step 2: Convert to fraction form
    128,271.60/192,428.46 = 39,525.12/x
  3. Step 3: Cross multiply
    128,271.60x = 192,428.46 × 39,525.12
  4. Step 4: Simplify right side
    128,271.60x = 7,605,757,972.92
  5. Step 5: Solve for x
    x = 7,605,757,972.92/128,271.60
  6. Step 6: Final answer
    x = 59,294.17

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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.