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Finding the Fourth Proportional to 158,904.66, 219,289.08 and 87,286.08

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Solution

The fourth proportional to 158,904.66, 219,289.08 and 87,286.08 is: 120,455.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,904.66 : 219,289.08 = 87,286.08 : x
  2. Step 2: Convert to fraction form
    158,904.66/219,289.08 = 87,286.08/x
  3. Step 3: Cross multiply
    158,904.66x = 219,289.08 × 87,286.08
  4. Step 4: Simplify right side
    158,904.66x = 19,140,884,180.01
  5. Step 5: Solve for x
    x = 19,140,884,180.01/158,904.66
  6. Step 6: Final answer
    x = 120,455.15

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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.