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Finding the Fourth Proportional to 159,133.51, 219,599.86 and 87,513.53

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Solution

The fourth proportional to 159,133.51, 219,599.86 and 87,513.53 is: 120,766.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,133.51 : 219,599.86 = 87,513.53 : x
  2. Step 2: Convert to fraction form
    159,133.51/219,599.86 = 87,513.53/x
  3. Step 3: Cross multiply
    159,133.51x = 219,599.86 × 87,513.53
  4. Step 4: Simplify right side
    159,133.51x = 19,217,958,936.11
  5. Step 5: Solve for x
    x = 19,217,958,936.11/159,133.51
  6. Step 6: Final answer
    x = 120,766.26

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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.