Home / 211,171.81-291,417.08-115,678.48

Finding the Fourth Proportional to 211,171.81, 291,417.08 and 115,678.48

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Solution

The fourth proportional to 211,171.81, 291,417.08 and 115,678.48 is: 159,636.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,171.81 : 291,417.08 = 115,678.48 : x
  2. Step 2: Convert to fraction form
    211,171.81/291,417.08 = 115,678.48/x
  3. Step 3: Cross multiply
    211,171.81x = 291,417.08 × 115,678.48
  4. Step 4: Simplify right side
    211,171.81x = 33,710,684,860.44
  5. Step 5: Solve for x
    x = 33,710,684,860.44/211,171.81
  6. Step 6: Final answer
    x = 159,636.29

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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.