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Finding the Fourth Proportional to 158,887.68, 219,267.74 and 87,270.72

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Solution

The fourth proportional to 158,887.68, 219,267.74 and 87,270.72 is: 120,435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,887.68 : 219,267.74 = 87,270.72 : x
  2. Step 2: Convert to fraction form
    158,887.68/219,267.74 = 87,270.72/x
  3. Step 3: Cross multiply
    158,887.68x = 219,267.74 × 87,270.72
  4. Step 4: Simplify right side
    158,887.68x = 19,135,653,542.57
  5. Step 5: Solve for x
    x = 19,135,653,542.57/158,887.68
  6. Step 6: Final answer
    x = 120,435.10

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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.