Home / 161,971.51-243,027.43-87,004.19

Finding the Fourth Proportional to 161,971.51, 243,027.43 and 87,004.19

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Solution

The fourth proportional to 161,971.51, 243,027.43 and 87,004.19 is: 130,543.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,971.51 : 243,027.43 = 87,004.19 : x
  2. Step 2: Convert to fraction form
    161,971.51/243,027.43 = 87,004.19/x
  3. Step 3: Cross multiply
    161,971.51x = 243,027.43 × 87,004.19
  4. Step 4: Simplify right side
    161,971.51x = 21,144,403,479.79
  5. Step 5: Solve for x
    x = 21,144,403,479.79/161,971.51
  6. Step 6: Final answer
    x = 130,543.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.