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Finding the Fourth Proportional to 159,899.84, 220,658.24 and 87,300.24

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Solution

The fourth proportional to 159,899.84, 220,658.24 and 87,300.24 is: 120,472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,899.84 : 220,658.24 = 87,300.24 : x
  2. Step 2: Convert to fraction form
    159,899.84/220,658.24 = 87,300.24/x
  3. Step 3: Cross multiply
    159,899.84x = 220,658.24 × 87,300.24
  4. Step 4: Simplify right side
    159,899.84x = 19,263,517,309.98
  5. Step 5: Solve for x
    x = 19,263,517,309.98/159,899.84
  6. Step 6: Final answer
    x = 120,472.40

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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.