Home / 128,241.20-176,982.01-70,879.28

Finding the Fourth Proportional to 128,241.20, 176,982.01 and 70,879.28

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Solution

The fourth proportional to 128,241.20, 176,982.01 and 70,879.28 is: 97,818.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,241.20 : 176,982.01 = 70,879.28 : x
  2. Step 2: Convert to fraction form
    128,241.20/176,982.01 = 70,879.28/x
  3. Step 3: Cross multiply
    128,241.20x = 176,982.01 × 70,879.28
  4. Step 4: Simplify right side
    128,241.20x = 12,544,357,441.75
  5. Step 5: Solve for x
    x = 12,544,357,441.75/128,241.20
  6. Step 6: Final answer
    x = 97,818.47

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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.