Home / 210,838.18-316,170.26-80,987.36

Finding the Fourth Proportional to 210,838.18, 316,170.26 and 80,987.36

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Solution

The fourth proportional to 210,838.18, 316,170.26 and 80,987.36 is: 121,447.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,838.18 : 316,170.26 = 80,987.36 : x
  2. Step 2: Convert to fraction form
    210,838.18/316,170.26 = 80,987.36/x
  3. Step 3: Cross multiply
    210,838.18x = 316,170.26 × 80,987.36
  4. Step 4: Simplify right side
    210,838.18x = 25,605,794,667.91
  5. Step 5: Solve for x
    x = 25,605,794,667.91/210,838.18
  6. Step 6: Final answer
    x = 121,447.62

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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.