Home / 128,453.16-177,238.70-88,152.18

Finding the Fourth Proportional to 128,453.16, 177,238.70 and 88,152.18

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Solution

The fourth proportional to 128,453.16, 177,238.70 and 88,152.18 is: 121,631.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,453.16 : 177,238.70 = 88,152.18 : x
  2. Step 2: Convert to fraction form
    128,453.16/177,238.70 = 88,152.18/x
  3. Step 3: Cross multiply
    128,453.16x = 177,238.70 × 88,152.18
  4. Step 4: Simplify right side
    128,453.16x = 15,623,977,785.37
  5. Step 5: Solve for x
    x = 15,623,977,785.37/128,453.16
  6. Step 6: Final answer
    x = 121,631.71

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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.