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Finding the Fourth Proportional to 159,133.40, 219,599.70 and 87,513.42

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Solution

The fourth proportional to 159,133.40, 219,599.70 and 87,513.42 is: 120,766.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,133.40 : 219,599.70 = 87,513.42 : x
  2. Step 2: Convert to fraction form
    159,133.40/219,599.70 = 87,513.42/x
  3. Step 3: Cross multiply
    159,133.40x = 219,599.70 × 87,513.42
  4. Step 4: Simplify right side
    159,133.40x = 19,217,919,242.41
  5. Step 5: Solve for x
    x = 19,217,919,242.41/159,133.40
  6. Step 6: Final answer
    x = 120,766.10

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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.