Home / 210,999.16-291,179.36-115,512.04

Finding the Fourth Proportional to 210,999.16, 291,179.36 and 115,512.04

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Solution

The fourth proportional to 210,999.16, 291,179.36 and 115,512.04 is: 159,406.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,999.16 : 291,179.36 = 115,512.04 : x
  2. Step 2: Convert to fraction form
    210,999.16/291,179.36 = 115,512.04/x
  3. Step 3: Cross multiply
    210,999.16x = 291,179.36 × 115,512.04
  4. Step 4: Simplify right side
    210,999.16x = 33,634,721,879.49
  5. Step 5: Solve for x
    x = 33,634,721,879.49/210,999.16
  6. Step 6: Final answer
    x = 159,406.90

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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.