Home / 128,523.10-177,367.40-71,162.40

Finding the Fourth Proportional to 128,523.10, 177,367.40 and 71,162.40

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Solution

The fourth proportional to 128,523.10, 177,367.40 and 71,162.40 is: 98,207.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,523.10 : 177,367.40 = 71,162.40 : x
  2. Step 2: Convert to fraction form
    128,523.10/177,367.40 = 71,162.40/x
  3. Step 3: Cross multiply
    128,523.10x = 177,367.40 × 71,162.40
  4. Step 4: Simplify right side
    128,523.10x = 12,621,889,865.76
  5. Step 5: Solve for x
    x = 12,621,889,865.76/128,523.10
  6. Step 6: Final answer
    x = 98,207.17

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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.