Home / 211,234.16-316,670.81-78,089.60

Finding the Fourth Proportional to 211,234.16, 316,670.81 and 78,089.60

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Solution

The fourth proportional to 211,234.16, 316,670.81 and 78,089.60 is: 117,067.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,234.16 : 316,670.81 = 78,089.60 : x
  2. Step 2: Convert to fraction form
    211,234.16/316,670.81 = 78,089.60/x
  3. Step 3: Cross multiply
    211,234.16x = 316,670.81 × 78,089.60
  4. Step 4: Simplify right side
    211,234.16x = 24,728,697,277.72
  5. Step 5: Solve for x
    x = 24,728,697,277.72/211,234.16
  6. Step 6: Final answer
    x = 117,067.70

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1.5x scale

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.