Home / 142,849.12-197,134.01-78,324.25

Finding the Fourth Proportional to 142,849.12, 197,134.01 and 78,324.25

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Solution

The fourth proportional to 142,849.12, 197,134.01 and 78,324.25 is: 108,088.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,849.12 : 197,134.01 = 78,324.25 : x
  2. Step 2: Convert to fraction form
    142,849.12/197,134.01 = 78,324.25/x
  3. Step 3: Cross multiply
    142,849.12x = 197,134.01 × 78,324.25
  4. Step 4: Simplify right side
    142,849.12x = 15,440,372,598.29
  5. Step 5: Solve for x
    x = 15,440,372,598.29/142,849.12
  6. Step 6: Final answer
    x = 108,088.68

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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.