Home / 128,600.24-177,464.30-71,237.26

Finding the Fourth Proportional to 128,600.24, 177,464.30 and 71,237.26

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Solution

The fourth proportional to 128,600.24, 177,464.30 and 71,237.26 is: 98,305.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,600.24 : 177,464.30 = 71,237.26 : x
  2. Step 2: Convert to fraction form
    128,600.24/177,464.30 = 71,237.26/x
  3. Step 3: Cross multiply
    128,600.24x = 177,464.30 × 71,237.26
  4. Step 4: Simplify right side
    128,600.24x = 12,642,070,479.82
  5. Step 5: Solve for x
    x = 12,642,070,479.82/128,600.24
  6. Step 6: Final answer
    x = 98,305.19

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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.