Home / 128,847.91-177,804.09-71,486.62

Finding the Fourth Proportional to 128,847.91, 177,804.09 and 71,486.62

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Solution

The fourth proportional to 128,847.91, 177,804.09 and 71,486.62 is: 98,648.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,847.91 : 177,804.09 = 71,486.62 : x
  2. Step 2: Convert to fraction form
    128,847.91/177,804.09 = 71,486.62/x
  3. Step 3: Cross multiply
    128,847.91x = 177,804.09 × 71,486.62
  4. Step 4: Simplify right side
    128,847.91x = 12,710,613,772.57
  5. Step 5: Solve for x
    x = 12,710,613,772.57/128,847.91
  6. Step 6: Final answer
    x = 98,648.19

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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.