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Finding the Fourth Proportional to 143,402.88, 214,808.40 and 84,058.32

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Solution

The fourth proportional to 143,402.88, 214,808.40 and 84,058.32 is: 125,914.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,402.88 : 214,808.40 = 84,058.32 : x
  2. Step 2: Convert to fraction form
    143,402.88/214,808.40 = 84,058.32/x
  3. Step 3: Cross multiply
    143,402.88x = 214,808.40 × 84,058.32
  4. Step 4: Simplify right side
    143,402.88x = 18,056,433,225.89
  5. Step 5: Solve for x
    x = 18,056,433,225.89/143,402.88
  6. Step 6: Final answer
    x = 125,914.02

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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.