Home / 211,125.05-316,643.82-77,914.28

Finding the Fourth Proportional to 211,125.05, 316,643.82 and 77,914.28

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Solution

The fourth proportional to 211,125.05, 316,643.82 and 77,914.28 is: 116,855.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,125.05 : 316,643.82 = 77,914.28 : x
  2. Step 2: Convert to fraction form
    211,125.05/316,643.82 = 77,914.28/x
  3. Step 3: Cross multiply
    211,125.05x = 316,643.82 × 77,914.28
  4. Step 4: Simplify right side
    211,125.05x = 24,671,073,668.53
  5. Step 5: Solve for x
    x = 24,671,073,668.53/211,125.05
  6. Step 6: Final answer
    x = 116,855.27

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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.