Home / 128,529.06-177,345.36-83,200.74

Finding the Fourth Proportional to 128,529.06, 177,345.36 and 83,200.74

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Solution

The fourth proportional to 128,529.06, 177,345.36 and 83,200.74 is: 114,801.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,529.06 : 177,345.36 = 83,200.74 : x
  2. Step 2: Convert to fraction form
    128,529.06/177,345.36 = 83,200.74/x
  3. Step 3: Cross multiply
    128,529.06x = 177,345.36 × 83,200.74
  4. Step 4: Simplify right side
    128,529.06x = 14,755,265,187.57
  5. Step 5: Solve for x
    x = 14,755,265,187.57/128,529.06
  6. Step 6: Final answer
    x = 114,801.00

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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.