Home / 211,090.96-291,312.12-115,606.72

Finding the Fourth Proportional to 211,090.96, 291,312.12 and 115,606.72

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Solution

The fourth proportional to 211,090.96, 291,312.12 and 115,606.72 is: 159,540.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,090.96 : 291,312.12 = 115,606.72 : x
  2. Step 2: Convert to fraction form
    211,090.96/291,312.12 = 115,606.72/x
  3. Step 3: Cross multiply
    211,090.96x = 291,312.12 × 115,606.72
  4. Step 4: Simplify right side
    211,090.96x = 33,677,638,689.45
  5. Step 5: Solve for x
    x = 33,677,638,689.45/211,090.96
  6. Step 6: Final answer
    x = 159,540.89

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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.