Home / 211,169.63-291,279.85-138,577.23

Finding the Fourth Proportional to 211,169.63, 291,279.85 and 138,577.23

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Solution

The fourth proportional to 211,169.63, 291,279.85 and 138,577.23 is: 191,148.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,169.63 : 291,279.85 = 138,577.23 : x
  2. Step 2: Convert to fraction form
    211,169.63/291,279.85 = 138,577.23/x
  3. Step 3: Cross multiply
    211,169.63x = 291,279.85 × 138,577.23
  4. Step 4: Simplify right side
    211,169.63x = 40,364,754,421.37
  5. Step 5: Solve for x
    x = 40,364,754,421.37/211,169.63
  6. Step 6: Final answer
    x = 191,148.48

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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.