Home / 128,320.65-177,081.46-73,883.52

Finding the Fourth Proportional to 128,320.65, 177,081.46 and 73,883.52

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Solution

The fourth proportional to 128,320.65, 177,081.46 and 73,883.52 is: 101,958.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,320.65 : 177,081.46 = 73,883.52 : x
  2. Step 2: Convert to fraction form
    128,320.65/177,081.46 = 73,883.52/x
  3. Step 3: Cross multiply
    128,320.65x = 177,081.46 × 73,883.52
  4. Step 4: Simplify right side
    128,320.65x = 13,083,401,406.83
  5. Step 5: Solve for x
    x = 13,083,401,406.83/128,320.65
  6. Step 6: Final answer
    x = 101,958.66

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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.