Home / 211,181.50-291,437.75-115,688.20

Finding the Fourth Proportional to 211,181.50, 291,437.75 and 115,688.20

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Solution

The fourth proportional to 211,181.50, 291,437.75 and 115,688.20 is: 159,653.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,181.50 : 291,437.75 = 115,688.20 : x
  2. Step 2: Convert to fraction form
    211,181.50/291,437.75 = 115,688.20/x
  3. Step 3: Cross multiply
    211,181.50x = 291,437.75 × 115,688.20
  4. Step 4: Simplify right side
    211,181.50x = 33,715,908,709.55
  5. Step 5: Solve for x
    x = 33,715,908,709.55/211,181.50
  6. Step 6: Final answer
    x = 159,653.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.