Home / 128,568.16-177,365.14-83,260.74

Finding the Fourth Proportional to 128,568.16, 177,365.14 and 83,260.74

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Solution

The fourth proportional to 128,568.16, 177,365.14 and 83,260.74 is: 114,861.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,568.16 : 177,365.14 = 83,260.74 : x
  2. Step 2: Convert to fraction form
    128,568.16/177,365.14 = 83,260.74/x
  3. Step 3: Cross multiply
    128,568.16x = 177,365.14 × 83,260.74
  4. Step 4: Simplify right side
    128,568.16x = 14,767,552,806.60
  5. Step 5: Solve for x
    x = 14,767,552,806.60/128,568.16
  6. Step 6: Final answer
    x = 114,861.66

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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.