Home / 128,260.41-176,999.95-70,118.34

Finding the Fourth Proportional to 128,260.41, 176,999.95 and 70,118.34

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Solution

The fourth proportional to 128,260.41, 176,999.95 and 70,118.34 is: 96,763.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,260.41 : 176,999.95 = 70,118.34 : x
  2. Step 2: Convert to fraction form
    128,260.41/176,999.95 = 70,118.34/x
  3. Step 3: Cross multiply
    128,260.41x = 176,999.95 × 70,118.34
  4. Step 4: Simplify right side
    128,260.41x = 12,410,942,674.08
  5. Step 5: Solve for x
    x = 12,410,942,674.08/128,260.41
  6. Step 6: Final answer
    x = 96,763.63

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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.