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Finding the Fourth Proportional to 181,780.70, 250,901.54 and 105,287.46

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Solution

The fourth proportional to 181,780.70, 250,901.54 and 105,287.46 is: 145,322.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,780.70 : 250,901.54 = 105,287.46 : x
  2. Step 2: Convert to fraction form
    181,780.70/250,901.54 = 105,287.46/x
  3. Step 3: Cross multiply
    181,780.70x = 250,901.54 × 105,287.46
  4. Step 4: Simplify right side
    181,780.70x = 26,416,785,856.69
  5. Step 5: Solve for x
    x = 26,416,785,856.69/181,780.70
  6. Step 6: Final answer
    x = 145,322.28

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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.