Home / 128,189.09-176,904.52-70,832.13

Finding the Fourth Proportional to 128,189.09, 176,904.52 and 70,832.13

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Solution

The fourth proportional to 128,189.09, 176,904.52 and 70,832.13 is: 97,750.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,189.09 : 176,904.52 = 70,832.13 : x
  2. Step 2: Convert to fraction form
    128,189.09/176,904.52 = 70,832.13/x
  3. Step 3: Cross multiply
    128,189.09x = 176,904.52 × 70,832.13
  4. Step 4: Simplify right side
    128,189.09x = 12,530,522,719.54
  5. Step 5: Solve for x
    x = 12,530,522,719.54/128,189.09
  6. Step 6: Final answer
    x = 97,750.31

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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.