Home / 128,573.06-177,426.90-71,210.11

Finding the Fourth Proportional to 128,573.06, 177,426.90 and 71,210.11

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Solution

The fourth proportional to 128,573.06, 177,426.90 and 71,210.11 is: 98,267.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,573.06 : 177,426.90 = 71,210.11 : x
  2. Step 2: Convert to fraction form
    128,573.06/177,426.90 = 71,210.11/x
  3. Step 3: Cross multiply
    128,573.06x = 177,426.90 × 71,210.11
  4. Step 4: Simplify right side
    128,573.06x = 12,634,589,065.96
  5. Step 5: Solve for x
    x = 12,634,589,065.96/128,573.06
  6. Step 6: Final answer
    x = 98,267.78

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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.