Home / 142,822.62-197,088.12-79,159.86

Finding the Fourth Proportional to 142,822.62, 197,088.12 and 79,159.86

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Solution

The fourth proportional to 142,822.62, 197,088.12 and 79,159.86 is: 109,236.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,822.62 : 197,088.12 = 79,159.86 : x
  2. Step 2: Convert to fraction form
    142,822.62/197,088.12 = 79,159.86/x
  3. Step 3: Cross multiply
    142,822.62x = 197,088.12 × 79,159.86
  4. Step 4: Simplify right side
    142,822.62x = 15,601,467,986.86
  5. Step 5: Solve for x
    x = 15,601,467,986.86/142,822.62
  6. Step 6: Final answer
    x = 109,236.67

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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.