Home / 211,155.10-291,395.02-115,661.50

Finding the Fourth Proportional to 211,155.10, 291,395.02 and 115,661.50

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Solution

The fourth proportional to 211,155.10, 291,395.02 and 115,661.50 is: 159,613.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,155.10 : 291,395.02 = 115,661.50 : x
  2. Step 2: Convert to fraction form
    211,155.10/291,395.02 = 115,661.50/x
  3. Step 3: Cross multiply
    211,155.10x = 291,395.02 × 115,661.50
  4. Step 4: Simplify right side
    211,155.10x = 33,703,185,105.73
  5. Step 5: Solve for x
    x = 33,703,185,105.73/211,155.10
  6. Step 6: Final answer
    x = 159,613.41

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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.