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Finding the Fourth Proportional to 159,662.79, 220,333.03 and 87,065.51

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Solution

The fourth proportional to 159,662.79, 220,333.03 and 87,065.51 is: 120,149.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,662.79 : 220,333.03 = 87,065.51 : x
  2. Step 2: Convert to fraction form
    159,662.79/220,333.03 = 87,065.51/x
  3. Step 3: Cross multiply
    159,662.79x = 220,333.03 × 87,065.51
  4. Step 4: Simplify right side
    159,662.79x = 19,183,406,089.80
  5. Step 5: Solve for x
    x = 19,183,406,089.80/159,662.79
  6. Step 6: Final answer
    x = 120,149.51

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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.