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Finding the Fourth Proportional to 159,118.45, 219,585.05 and 87,498.98

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Solution

The fourth proportional to 159,118.45, 219,585.05 and 87,498.98 is: 120,749.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,118.45 : 219,585.05 = 87,498.98 : x
  2. Step 2: Convert to fraction form
    159,118.45/219,585.05 = 87,498.98/x
  3. Step 3: Cross multiply
    159,118.45x = 219,585.05 × 87,498.98
  4. Step 4: Simplify right side
    159,118.45x = 19,213,468,995.65
  5. Step 5: Solve for x
    x = 19,213,468,995.65/159,118.45
  6. Step 6: Final answer
    x = 120,749.47

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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.