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Finding the Fourth Proportional to 181,491.56, 250,458.58 and 100,918.20

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Solution

The fourth proportional to 181,491.56, 250,458.58 and 100,918.20 is: 139,267.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,491.56 : 250,458.58 = 100,918.20 : x
  2. Step 2: Convert to fraction form
    181,491.56/250,458.58 = 100,918.20/x
  3. Step 3: Cross multiply
    181,491.56x = 250,458.58 × 100,918.20
  4. Step 4: Simplify right side
    181,491.56x = 25,275,829,068.16
  5. Step 5: Solve for x
    x = 25,275,829,068.16/181,491.56
  6. Step 6: Final answer
    x = 139,267.24

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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.