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Finding the Fourth Proportional to 180,618.51, 271,102.73 and 87,189.87

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Solution

The fourth proportional to 180,618.51, 271,102.73 and 87,189.87 is: 130,869.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,618.51 : 271,102.73 = 87,189.87 : x
  2. Step 2: Convert to fraction form
    180,618.51/271,102.73 = 87,189.87/x
  3. Step 3: Cross multiply
    180,618.51x = 271,102.73 × 87,189.87
  4. Step 4: Simplify right side
    180,618.51x = 23,637,411,785.35
  5. Step 5: Solve for x
    x = 23,637,411,785.35/180,618.51
  6. Step 6: Final answer
    x = 130,869.27

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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.