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Finding the Fourth Proportional to 159,218.80, 219,716.40 and 87,598.08

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Solution

The fourth proportional to 159,218.80, 219,716.40 and 87,598.08 is: 120,882.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,218.80 : 219,716.40 = 87,598.08 : x
  2. Step 2: Convert to fraction form
    159,218.80/219,716.40 = 87,598.08/x
  3. Step 3: Cross multiply
    159,218.80x = 219,716.40 × 87,598.08
  4. Step 4: Simplify right side
    159,218.80x = 19,246,734,784.51
  5. Step 5: Solve for x
    x = 19,246,734,784.51/159,218.80
  6. Step 6: Final answer
    x = 120,882.30

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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.