Home / 210,100.42-315,089.12-83,698.65

Finding the Fourth Proportional to 210,100.42, 315,089.12 and 83,698.65

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Solution

The fourth proportional to 210,100.42, 315,089.12 and 83,698.65 is: 125,523.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,100.42 : 315,089.12 = 83,698.65 : x
  2. Step 2: Convert to fraction form
    210,100.42/315,089.12 = 83,698.65/x
  3. Step 3: Cross multiply
    210,100.42x = 315,089.12 × 83,698.65
  4. Step 4: Simplify right side
    210,100.42x = 26,372,535,335.67
  5. Step 5: Solve for x
    x = 26,372,535,335.67/210,100.42
  6. Step 6: Final answer
    x = 125,523.48

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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.