Home / 128,189.28-176,884.56-71,603.04

Finding the Fourth Proportional to 128,189.28, 176,884.56 and 71,603.04

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Solution

The fourth proportional to 128,189.28, 176,884.56 and 71,603.04 is: 98,802.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,189.28 : 176,884.56 = 71,603.04 : x
  2. Step 2: Convert to fraction form
    128,189.28/176,884.56 = 71,603.04/x
  3. Step 3: Cross multiply
    128,189.28x = 176,884.56 × 71,603.04
  4. Step 4: Simplify right side
    128,189.28x = 12,665,472,225.06
  5. Step 5: Solve for x
    x = 12,665,472,225.06/128,189.28
  6. Step 6: Final answer
    x = 98,802.90

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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.