Home / 128,768.33-177,695.36-71,410.01

Finding the Fourth Proportional to 128,768.33, 177,695.36 and 71,410.01

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Solution

The fourth proportional to 128,768.33, 177,695.36 and 71,410.01 is: 98,543.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,768.33 : 177,695.36 = 71,410.01 : x
  2. Step 2: Convert to fraction form
    128,768.33/177,695.36 = 71,410.01/x
  3. Step 3: Cross multiply
    128,768.33x = 177,695.36 × 71,410.01
  4. Step 4: Simplify right side
    128,768.33x = 12,689,227,077.50
  5. Step 5: Solve for x
    x = 12,689,227,077.50/128,768.33
  6. Step 6: Final answer
    x = 98,543.07

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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.