Home / 211,035.60-291,256.92-120,370.78

Finding the Fourth Proportional to 211,035.60, 291,256.92 and 120,370.78

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Solution

The fourth proportional to 211,035.60, 291,256.92 and 120,370.78 is: 166,127.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,035.60 : 291,256.92 = 120,370.78 : x
  2. Step 2: Convert to fraction form
    211,035.60/291,256.92 = 120,370.78/x
  3. Step 3: Cross multiply
    211,035.60x = 291,256.92 × 120,370.78
  4. Step 4: Simplify right side
    211,035.60x = 35,058,820,582.66
  5. Step 5: Solve for x
    x = 35,058,820,582.66/211,035.60
  6. Step 6: Final answer
    x = 166,127.52

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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.