Home / 128,136.97-176,828.37-71,548.36

Finding the Fourth Proportional to 128,136.97, 176,828.37 and 71,548.36

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Solution

The fourth proportional to 128,136.97, 176,828.37 and 71,548.36 is: 98,736.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,136.97 : 176,828.37 = 71,548.36 : x
  2. Step 2: Convert to fraction form
    128,136.97/176,828.37 = 71,548.36/x
  3. Step 3: Cross multiply
    128,136.97x = 176,828.37 × 71,548.36
  4. Step 4: Simplify right side
    128,136.97x = 12,651,779,874.97
  5. Step 5: Solve for x
    x = 12,651,779,874.97/128,136.97
  6. Step 6: Final answer
    x = 98,736.37

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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.