Home / 128,024.23-176,673.30-71,435.61

Finding the Fourth Proportional to 128,024.23, 176,673.30 and 71,435.61

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Solution

The fourth proportional to 128,024.23, 176,673.30 and 71,435.61 is: 98,581.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,024.23 : 176,673.30 = 71,435.61 : x
  2. Step 2: Convert to fraction form
    128,024.23/176,673.30 = 71,435.61/x
  3. Step 3: Cross multiply
    128,024.23x = 176,673.30 × 71,435.61
  4. Step 4: Simplify right side
    128,024.23x = 12,620,764,956.21
  5. Step 5: Solve for x
    x = 12,620,764,956.21/128,024.23
  6. Step 6: Final answer
    x = 98,581.07

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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.