Home / 128,179.04-176,871.82-77,190.96

Finding the Fourth Proportional to 128,179.04, 176,871.82 and 77,190.96

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Solution

The fourth proportional to 128,179.04, 176,871.82 and 77,190.96 is: 106,514.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,179.04 : 176,871.82 = 77,190.96 : x
  2. Step 2: Convert to fraction form
    128,179.04/176,871.82 = 77,190.96/x
  3. Step 3: Cross multiply
    128,179.04x = 176,871.82 × 77,190.96
  4. Step 4: Simplify right side
    128,179.04x = 13,652,905,582.75
  5. Step 5: Solve for x
    x = 13,652,905,582.75/128,179.04
  6. Step 6: Final answer
    x = 106,514.34

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1.5x scale

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.