Home / 211,156.79-291,396.51-115,663.86

Finding the Fourth Proportional to 211,156.79, 291,396.51 and 115,663.86

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Solution

The fourth proportional to 211,156.79, 291,396.51 and 115,663.86 is: 159,616.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,156.79 : 291,396.51 = 115,663.86 : x
  2. Step 2: Convert to fraction form
    211,156.79/291,396.51 = 115,663.86/x
  3. Step 3: Cross multiply
    211,156.79x = 291,396.51 × 115,663.86
  4. Step 4: Simplify right side
    211,156.79x = 33,704,045,137.13
  5. Step 5: Solve for x
    x = 33,704,045,137.13/211,156.79
  6. Step 6: Final answer
    x = 159,616.21

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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.