Home / 128,221.14-176,945.72-70,079.04

Finding the Fourth Proportional to 128,221.14, 176,945.72 and 70,079.04

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Solution

The fourth proportional to 128,221.14, 176,945.72 and 70,079.04 is: 96,709.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,221.14 : 176,945.72 = 70,079.04 : x
  2. Step 2: Convert to fraction form
    128,221.14/176,945.72 = 70,079.04/x
  3. Step 3: Cross multiply
    128,221.14x = 176,945.72 × 70,079.04
  4. Step 4: Simplify right side
    128,221.14x = 12,400,186,189.71
  5. Step 5: Solve for x
    x = 12,400,186,189.71/128,221.14
  6. Step 6: Final answer
    x = 96,709.37

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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.