Home / 210,905.80-291,054.18-115,412.20

Finding the Fourth Proportional to 210,905.80, 291,054.18 and 115,412.20

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Solution

The fourth proportional to 210,905.80, 291,054.18 and 115,412.20 is: 159,271.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,905.80 : 291,054.18 = 115,412.20 : x
  2. Step 2: Convert to fraction form
    210,905.80/291,054.18 = 115,412.20/x
  3. Step 3: Cross multiply
    210,905.80x = 291,054.18 × 115,412.20
  4. Step 4: Simplify right side
    210,905.80x = 33,591,203,233.00
  5. Step 5: Solve for x
    x = 33,591,203,233.00/210,905.80
  6. Step 6: Final answer
    x = 159,271.12

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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.