Home / 210,871.45-291,002.12-115,377.94

Finding the Fourth Proportional to 210,871.45, 291,002.12 and 115,377.94

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Solution

The fourth proportional to 210,871.45, 291,002.12 and 115,377.94 is: 159,221.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,871.45 : 291,002.12 = 115,377.94 : x
  2. Step 2: Convert to fraction form
    210,871.45/291,002.12 = 115,377.94/x
  3. Step 3: Cross multiply
    210,871.45x = 291,002.12 × 115,377.94
  4. Step 4: Simplify right side
    210,871.45x = 33,575,223,686.22
  5. Step 5: Solve for x
    x = 33,575,223,686.22/210,871.45
  6. Step 6: Final answer
    x = 159,221.29

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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.