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Finding the Fourth Proportional to 159,687.79, 220,384.67 and 119,331.45

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Solution

The fourth proportional to 159,687.79, 220,384.67 and 119,331.45 is: 164,689.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,687.79 : 220,384.67 = 119,331.45 : x
  2. Step 2: Convert to fraction form
    159,687.79/220,384.67 = 119,331.45/x
  3. Step 3: Cross multiply
    159,687.79x = 220,384.67 × 119,331.45
  4. Step 4: Simplify right side
    159,687.79x = 26,298,821,632.21
  5. Step 5: Solve for x
    x = 26,298,821,632.21/159,687.79
  6. Step 6: Final answer
    x = 164,689.00

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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.