Home / 211,505.48-291,818.40-136,097.72

Finding the Fourth Proportional to 211,505.48, 291,818.40 and 136,097.72

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Solution

The fourth proportional to 211,505.48, 291,818.40 and 136,097.72 is: 187,776.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,505.48 : 291,818.40 = 136,097.72 : x
  2. Step 2: Convert to fraction form
    211,505.48/291,818.40 = 136,097.72/x
  3. Step 3: Cross multiply
    211,505.48x = 291,818.40 × 136,097.72
  4. Step 4: Simplify right side
    211,505.48x = 39,715,818,894.05
  5. Step 5: Solve for x
    x = 39,715,818,894.05/211,505.48
  6. Step 6: Final answer
    x = 187,776.78

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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.