Home / 210,975.88-316,429.70-77,918.80

Finding the Fourth Proportional to 210,975.88, 316,429.70 and 77,918.80

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Solution

The fourth proportional to 210,975.88, 316,429.70 and 77,918.80 is: 116,865.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,975.88 : 316,429.70 = 77,918.80 : x
  2. Step 2: Convert to fraction form
    210,975.88/316,429.70 = 77,918.80/x
  3. Step 3: Cross multiply
    210,975.88x = 316,429.70 × 77,918.80
  4. Step 4: Simplify right side
    210,975.88x = 24,655,820,536.62
  5. Step 5: Solve for x
    x = 24,655,820,536.62/210,975.88
  6. Step 6: Final answer
    x = 116,865.59

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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.