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Finding the Fourth Proportional to 128,207.52, 176,748.48 and 110,491.20

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Solution

The fourth proportional to 128,207.52, 176,748.48 and 110,491.20 is: 152,324.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,207.52 : 176,748.48 = 110,491.20 : x
  2. Step 2: Convert to fraction form
    128,207.52/176,748.48 = 110,491.20/x
  3. Step 3: Cross multiply
    128,207.52x = 176,748.48 × 110,491.20
  4. Step 4: Simplify right side
    128,207.52x = 19,529,151,653.38
  5. Step 5: Solve for x
    x = 19,529,151,653.38/128,207.52
  6. Step 6: Final answer
    x = 152,324.54

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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.