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Finding the Fourth Proportional to 143,554, 215,332.92 and 45,058

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Solution

The fourth proportional to 143,554, 215,332.92 and 45,058 is: 67,587.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,554 : 215,332.92 = 45,058 : x
  2. Step 2: Convert to fraction form
    143,554/215,332.92 = 45,058/x
  3. Step 3: Cross multiply
    143,554x = 215,332.92 × 45,058
  4. Step 4: Simplify right side
    143,554x = 9,702,470,709.36
  5. Step 5: Solve for x
    x = 9,702,470,709.36/143,554
  6. Step 6: Final answer
    x = 67,587.60

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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.