Home / 128,267.06-177,007.23-71,678.43

Finding the Fourth Proportional to 128,267.06, 177,007.23 and 71,678.43

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Solution

The fourth proportional to 128,267.06, 177,007.23 and 71,678.43 is: 98,915.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,267.06 : 177,007.23 = 71,678.43 : x
  2. Step 2: Convert to fraction form
    128,267.06/177,007.23 = 71,678.43/x
  3. Step 3: Cross multiply
    128,267.06x = 177,007.23 × 71,678.43
  4. Step 4: Simplify right side
    128,267.06x = 12,687,600,345.05
  5. Step 5: Solve for x
    x = 12,687,600,345.05/128,267.06
  6. Step 6: Final answer
    x = 98,915.50

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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.