Home / 211,438.28-291,937.86-136,118

Finding the Fourth Proportional to 211,438.28, 291,937.86 and 136,118

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Solution

The fourth proportional to 211,438.28, 291,937.86 and 136,118 is: 187,941.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,438.28 : 291,937.86 = 136,118 : x
  2. Step 2: Convert to fraction form
    211,438.28/291,937.86 = 136,118/x
  3. Step 3: Cross multiply
    211,438.28x = 291,937.86 × 136,118
  4. Step 4: Simplify right side
    211,438.28x = 39,737,997,627.48
  5. Step 5: Solve for x
    x = 39,737,997,627.48/211,438.28
  6. Step 6: Final answer
    x = 187,941.36

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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.