Home / 128,822.65-177,776.33-71,465.73

Finding the Fourth Proportional to 128,822.65, 177,776.33 and 71,465.73

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Solution

The fourth proportional to 128,822.65, 177,776.33 and 71,465.73 is: 98,623.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,822.65 : 177,776.33 = 71,465.73 : x
  2. Step 2: Convert to fraction form
    128,822.65/177,776.33 = 71,465.73/x
  3. Step 3: Cross multiply
    128,822.65x = 177,776.33 × 71,465.73
  4. Step 4: Simplify right side
    128,822.65x = 12,704,914,176.18
  5. Step 5: Solve for x
    x = 12,704,914,176.18/128,822.65
  6. Step 6: Final answer
    x = 98,623.30

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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.