Home / 158,542.20-218,783.50-86,919.77

Finding the Fourth Proportional to 158,542.20, 218,783.50 and 86,919.77

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Solution

The fourth proportional to 158,542.20, 218,783.50 and 86,919.77 is: 119,946.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,542.20 : 218,783.50 = 86,919.77 : x
  2. Step 2: Convert to fraction form
    158,542.20/218,783.50 = 86,919.77/x
  3. Step 3: Cross multiply
    158,542.20x = 218,783.50 × 86,919.77
  4. Step 4: Simplify right side
    158,542.20x = 19,016,611,829.45
  5. Step 5: Solve for x
    x = 19,016,611,829.45/158,542.20
  6. Step 6: Final answer
    x = 119,946.69

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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.