Home / 128,190.47-176,906.63-71,600.63

Finding the Fourth Proportional to 128,190.47, 176,906.63 and 71,600.63

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Solution

The fourth proportional to 128,190.47, 176,906.63 and 71,600.63 is: 98,810.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,190.47 : 176,906.63 = 71,600.63 : x
  2. Step 2: Convert to fraction form
    128,190.47/176,906.63 = 71,600.63/x
  3. Step 3: Cross multiply
    128,190.47x = 176,906.63 × 71,600.63
  4. Step 4: Simplify right side
    128,190.47x = 12,666,625,453.65
  5. Step 5: Solve for x
    x = 12,666,625,453.65/128,190.47
  6. Step 6: Final answer
    x = 98,810.98

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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.