Home / 128,500.08-177,348.67-74,041.83

Finding the Fourth Proportional to 128,500.08, 177,348.67 and 74,041.83

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Solution

The fourth proportional to 128,500.08, 177,348.67 and 74,041.83 is: 102,188.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,500.08 : 177,348.67 = 74,041.83 : x
  2. Step 2: Convert to fraction form
    128,500.08/177,348.67 = 74,041.83/x
  3. Step 3: Cross multiply
    128,500.08x = 177,348.67 × 74,041.83
  4. Step 4: Simplify right side
    128,500.08x = 13,131,220,074.87
  5. Step 5: Solve for x
    x = 13,131,220,074.87/128,500.08
  6. Step 6: Final answer
    x = 102,188.42

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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.