Home / 128,606.34-177,523.29-104,691.50

Finding the Fourth Proportional to 128,606.34, 177,523.29 and 104,691.50

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Solution

The fourth proportional to 128,606.34, 177,523.29 and 104,691.50 is: 144,512.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,606.34 : 177,523.29 = 104,691.50 : x
  2. Step 2: Convert to fraction form
    128,606.34/177,523.29 = 104,691.50/x
  3. Step 3: Cross multiply
    128,606.34x = 177,523.29 × 104,691.50
  4. Step 4: Simplify right side
    128,606.34x = 18,585,178,627.42
  5. Step 5: Solve for x
    x = 18,585,178,627.42/128,606.34
  6. Step 6: Final answer
    x = 144,512.15

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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.