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Finding the Fourth Proportional to 158,903.67, 219,288.61 and 87,283.69

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Solution

The fourth proportional to 158,903.67, 219,288.61 and 87,283.69 is: 120,452.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,903.67 : 219,288.61 = 87,283.69 : x
  2. Step 2: Convert to fraction form
    158,903.67/219,288.61 = 87,283.69/x
  3. Step 3: Cross multiply
    158,903.67x = 219,288.61 × 87,283.69
  4. Step 4: Simplify right side
    158,903.67x = 19,140,319,913.04
  5. Step 5: Solve for x
    x = 19,140,319,913.04/158,903.67
  6. Step 6: Final answer
    x = 120,452.35

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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.