Home / 211,085.32-316,663.22-77,965.88

Finding the Fourth Proportional to 211,085.32, 316,663.22 and 77,965.88

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Solution

The fourth proportional to 211,085.32, 316,663.22 and 77,965.88 is: 116,961.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,085.32 : 316,663.22 = 77,965.88 : x
  2. Step 2: Convert to fraction form
    211,085.32/316,663.22 = 77,965.88/x
  3. Step 3: Cross multiply
    211,085.32x = 316,663.22 × 77,965.88
  4. Step 4: Simplify right side
    211,085.32x = 24,688,926,610.93
  5. Step 5: Solve for x
    x = 24,688,926,610.93/211,085.32
  6. Step 6: Final answer
    x = 116,961.84

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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.