Home / 211,207.32-316,935.81-78,181.02

Finding the Fourth Proportional to 211,207.32, 316,935.81 and 78,181.02

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Solution

The fourth proportional to 211,207.32, 316,935.81 and 78,181.02 is: 117,317.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,207.32 : 316,935.81 = 78,181.02 : x
  2. Step 2: Convert to fraction form
    211,207.32/316,935.81 = 78,181.02/x
  3. Step 3: Cross multiply
    211,207.32x = 316,935.81 × 78,181.02
  4. Step 4: Simplify right side
    211,207.32x = 24,778,364,900.33
  5. Step 5: Solve for x
    x = 24,778,364,900.33/211,207.32
  6. Step 6: Final answer
    x = 117,317.74

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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.