Home / 128,709.06-193,061.52-39,962.65

Finding the Fourth Proportional to 128,709.06, 193,061.52 and 39,962.65

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Solution

The fourth proportional to 128,709.06, 193,061.52 and 39,962.65 is: 59,943.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,709.06 : 193,061.52 = 39,962.65 : x
  2. Step 2: Convert to fraction form
    128,709.06/193,061.52 = 39,962.65/x
  3. Step 3: Cross multiply
    128,709.06x = 193,061.52 × 39,962.65
  4. Step 4: Simplify right side
    128,709.06x = 7,715,250,584.74
  5. Step 5: Solve for x
    x = 7,715,250,584.74/128,709.06
  6. Step 6: Final answer
    x = 59,943.34

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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.