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Finding the Fourth Proportional to 159,036.77, 219,467.79 and 87,415.26

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Solution

The fourth proportional to 159,036.77, 219,467.79 and 87,415.26 is: 120,631.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,036.77 : 219,467.79 = 87,415.26 : x
  2. Step 2: Convert to fraction form
    159,036.77/219,467.79 = 87,415.26/x
  3. Step 3: Cross multiply
    159,036.77x = 219,467.79 × 87,415.26
  4. Step 4: Simplify right side
    159,036.77x = 19,184,833,924.48
  5. Step 5: Solve for x
    x = 19,184,833,924.48/159,036.77
  6. Step 6: Final answer
    x = 120,631.44

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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.