Home / 128,287.16-177,031.04-70,922.82

Finding the Fourth Proportional to 128,287.16, 177,031.04 and 70,922.82

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Solution

The fourth proportional to 128,287.16, 177,031.04 and 70,922.82 is: 97,870.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,287.16 : 177,031.04 = 70,922.82 : x
  2. Step 2: Convert to fraction form
    128,287.16/177,031.04 = 70,922.82/x
  3. Step 3: Cross multiply
    128,287.16x = 177,031.04 × 70,922.82
  4. Step 4: Simplify right side
    128,287.16x = 12,555,540,584.33
  5. Step 5: Solve for x
    x = 12,555,540,584.33/128,287.16
  6. Step 6: Final answer
    x = 97,870.59

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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.