Home / 128,529.04-192,826.80-75,266

Finding the Fourth Proportional to 128,529.04, 192,826.80 and 75,266

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Solution

The fourth proportional to 128,529.04, 192,826.80 and 75,266 is: 112,918.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,529.04 : 192,826.80 = 75,266 : x
  2. Step 2: Convert to fraction form
    128,529.04/192,826.80 = 75,266/x
  3. Step 3: Cross multiply
    128,529.04x = 192,826.80 × 75,266
  4. Step 4: Simplify right side
    128,529.04x = 14,513,301,928.80
  5. Step 5: Solve for x
    x = 14,513,301,928.80/128,529.04
  6. Step 6: Final answer
    x = 112,918.47

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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.