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Finding the Fourth Proportional to 111,875.45, 154,349.15 and 63,471.68

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Solution

The fourth proportional to 111,875.45, 154,349.15 and 63,471.68 is: 87,568.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,875.45 : 154,349.15 = 63,471.68 : x
  2. Step 2: Convert to fraction form
    111,875.45/154,349.15 = 63,471.68/x
  3. Step 3: Cross multiply
    111,875.45x = 154,349.15 × 63,471.68
  4. Step 4: Simplify right side
    111,875.45x = 9,796,799,448.21
  5. Step 5: Solve for x
    x = 9,796,799,448.21/111,875.45
  6. Step 6: Final answer
    x = 87,568.80

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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.