Home / 128,001.38-176,708.30-93,507.38

Finding the Fourth Proportional to 128,001.38, 176,708.30 and 93,507.38

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Solution

The fourth proportional to 128,001.38, 176,708.30 and 93,507.38 is: 129,088.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,001.38 : 176,708.30 = 93,507.38 : x
  2. Step 2: Convert to fraction form
    128,001.38/176,708.30 = 93,507.38/x
  3. Step 3: Cross multiply
    128,001.38x = 176,708.30 × 93,507.38
  4. Step 4: Simplify right side
    128,001.38x = 16,523,529,507.48
  5. Step 5: Solve for x
    x = 16,523,529,507.48/128,001.38
  6. Step 6: Final answer
    x = 129,088.69

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Half scale
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Double scale
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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.