Home / 210,963.03-291,129.33-115,475.78

Finding the Fourth Proportional to 210,963.03, 291,129.33 and 115,475.78

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Solution

The fourth proportional to 210,963.03, 291,129.33 and 115,475.78 is: 159,356.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,963.03 : 291,129.33 = 115,475.78 : x
  2. Step 2: Convert to fraction form
    210,963.03/291,129.33 = 115,475.78/x
  3. Step 3: Cross multiply
    210,963.03x = 291,129.33 × 115,475.78
  4. Step 4: Simplify right side
    210,963.03x = 33,618,385,006.98
  5. Step 5: Solve for x
    x = 33,618,385,006.98/210,963.03
  6. Step 6: Final answer
    x = 159,356.76

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1.5x scale

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.