Home / 211,168.80-291,413-115,678.92

Finding the Fourth Proportional to 211,168.80, 291,413 and 115,678.92

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Solution

The fourth proportional to 211,168.80, 291,413 and 115,678.92 is: 159,636.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,168.80 : 291,413 = 115,678.92 : x
  2. Step 2: Convert to fraction form
    211,168.80/291,413 = 115,678.92/x
  3. Step 3: Cross multiply
    211,168.80x = 291,413 × 115,678.92
  4. Step 4: Simplify right side
    211,168.80x = 33,710,341,113.96
  5. Step 5: Solve for x
    x = 33,710,341,113.96/211,168.80
  6. Step 6: Final answer
    x = 159,636.94

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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.