Home / 128,334.03-177,102.08-70,970.37

Finding the Fourth Proportional to 128,334.03, 177,102.08 and 70,970.37

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Solution

The fourth proportional to 128,334.03, 177,102.08 and 70,970.37 is: 97,939.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,334.03 : 177,102.08 = 70,970.37 : x
  2. Step 2: Convert to fraction form
    128,334.03/177,102.08 = 70,970.37/x
  3. Step 3: Cross multiply
    128,334.03x = 177,102.08 × 70,970.37
  4. Step 4: Simplify right side
    128,334.03x = 12,568,998,905.01
  5. Step 5: Solve for x
    x = 12,568,998,905.01/128,334.03
  6. Step 6: Final answer
    x = 97,939.72

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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.