Home / 128,646.06-177,532.92-71,287.14

Finding the Fourth Proportional to 128,646.06, 177,532.92 and 71,287.14

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Solution

The fourth proportional to 128,646.06, 177,532.92 and 71,287.14 is: 98,377.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,646.06 : 177,532.92 = 71,287.14 : x
  2. Step 2: Convert to fraction form
    128,646.06/177,532.92 = 71,287.14/x
  3. Step 3: Cross multiply
    128,646.06x = 177,532.92 × 71,287.14
  4. Step 4: Simplify right side
    128,646.06x = 12,655,814,122.65
  5. Step 5: Solve for x
    x = 12,655,814,122.65/128,646.06
  6. Step 6: Final answer
    x = 98,377.01

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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.