Home / 177,609.46-245,015.61-129,136.28

Finding the Fourth Proportional to 177,609.46, 245,015.61 and 129,136.28

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Solution

The fourth proportional to 177,609.46, 245,015.61 and 129,136.28 is: 178,145.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,609.46 : 245,015.61 = 129,136.28 : x
  2. Step 2: Convert to fraction form
    177,609.46/245,015.61 = 129,136.28/x
  3. Step 3: Cross multiply
    177,609.46x = 245,015.61 × 129,136.28
  4. Step 4: Simplify right side
    177,609.46x = 31,640,403,071.19
  5. Step 5: Solve for x
    x = 31,640,403,071.19/177,609.46
  6. Step 6: Final answer
    x = 178,145.93

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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.