Home / 211,151.52-291,389.16-115,661.65

Finding the Fourth Proportional to 211,151.52, 291,389.16 and 115,661.65

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Solution

The fourth proportional to 211,151.52, 291,389.16 and 115,661.65 is: 159,613.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,151.52 : 291,389.16 = 115,661.65 : x
  2. Step 2: Convert to fraction form
    211,151.52/291,389.16 = 115,661.65/x
  3. Step 3: Cross multiply
    211,151.52x = 291,389.16 × 115,661.65
  4. Step 4: Simplify right side
    211,151.52x = 33,702,551,037.71
  5. Step 5: Solve for x
    x = 33,702,551,037.71/211,151.52
  6. Step 6: Final answer
    x = 159,613.11

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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.