Home / 128,104.00-176,783.47-71,515.37

Finding the Fourth Proportional to 128,104.00, 176,783.47 and 71,515.37

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Solution

The fourth proportional to 128,104.00, 176,783.47 and 71,515.37 is: 98,691.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,104.00 : 176,783.47 = 71,515.37 : x
  2. Step 2: Convert to fraction form
    128,104.00/176,783.47 = 71,515.37/x
  3. Step 3: Cross multiply
    128,104.00x = 176,783.47 × 71,515.37
  4. Step 4: Simplify right side
    128,104.00x = 12,642,735,530.10
  5. Step 5: Solve for x
    x = 12,642,735,530.10/128,104.00
  6. Step 6: Final answer
    x = 98,691.19

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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.