Home / 211,171.69-291,416.91-115,678.36

Finding the Fourth Proportional to 211,171.69, 291,416.91 and 115,678.36

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Solution

The fourth proportional to 211,171.69, 291,416.91 and 115,678.36 is: 159,636.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,171.69 : 291,416.91 = 115,678.36 : x
  2. Step 2: Convert to fraction form
    211,171.69/291,416.91 = 115,678.36/x
  3. Step 3: Cross multiply
    211,171.69x = 291,416.91 × 115,678.36
  4. Step 4: Simplify right side
    211,171.69x = 33,710,630,225.07
  5. Step 5: Solve for x
    x = 33,710,630,225.07/211,171.69
  6. Step 6: Final answer
    x = 159,636.12

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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.