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Finding the Fourth Proportional to 158,884.80, 219,262.32 and 87,265.68

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Solution

The fourth proportional to 158,884.80, 219,262.32 and 87,265.68 is: 120,427.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,884.80 : 219,262.32 = 87,265.68 : x
  2. Step 2: Convert to fraction form
    158,884.80/219,262.32 = 87,265.68/x
  3. Step 3: Cross multiply
    158,884.80x = 219,262.32 × 87,265.68
  4. Step 4: Simplify right side
    158,884.80x = 19,134,075,453.18
  5. Step 5: Solve for x
    x = 19,134,075,453.18/158,884.80
  6. Step 6: Final answer
    x = 120,427.35

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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.