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Finding the Fourth Proportional to 159,984.07, 220,776.70 and 87,387.01

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Solution

The fourth proportional to 159,984.07, 220,776.70 and 87,387.01 is: 120,593.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,984.07 : 220,776.70 = 87,387.01 : x
  2. Step 2: Convert to fraction form
    159,984.07/220,776.70 = 87,387.01/x
  3. Step 3: Cross multiply
    159,984.07x = 220,776.70 × 87,387.01
  4. Step 4: Simplify right side
    159,984.07x = 19,293,015,690.67
  5. Step 5: Solve for x
    x = 19,293,015,690.67/159,984.07
  6. Step 6: Final answer
    x = 120,593.35

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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.