Home / 142,986.96-197,345.50-79,345.26

Finding the Fourth Proportional to 142,986.96, 197,345.50 and 79,345.26

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Solution

The fourth proportional to 142,986.96, 197,345.50 and 79,345.26 is: 109,509.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,986.96 : 197,345.50 = 79,345.26 : x
  2. Step 2: Convert to fraction form
    142,986.96/197,345.50 = 79,345.26/x
  3. Step 3: Cross multiply
    142,986.96x = 197,345.50 × 79,345.26
  4. Step 4: Simplify right side
    142,986.96x = 15,658,429,808.97
  5. Step 5: Solve for x
    x = 15,658,429,808.97/142,986.96
  6. Step 6: Final answer
    x = 109,509.50

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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.