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Finding the Fourth Proportional to 159,451.03, 220,052.37 and 87,831.01

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Solution

The fourth proportional to 159,451.03, 220,052.37 and 87,831.01 is: 121,212.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,451.03 : 220,052.37 = 87,831.01 : x
  2. Step 2: Convert to fraction form
    159,451.03/220,052.37 = 87,831.01/x
  3. Step 3: Cross multiply
    159,451.03x = 220,052.37 × 87,831.01
  4. Step 4: Simplify right side
    159,451.03x = 19,327,421,909.99
  5. Step 5: Solve for x
    x = 19,327,421,909.99/159,451.03
  6. Step 6: Final answer
    x = 121,212.27

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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.