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Finding the Fourth Proportional to 159,166.31, 219,680.72 and 91,228.82

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Solution

The fourth proportional to 159,166.31, 219,680.72 and 91,228.82 is: 125,913.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,166.31 : 219,680.72 = 91,228.82 : x
  2. Step 2: Convert to fraction form
    159,166.31/219,680.72 = 91,228.82/x
  3. Step 3: Cross multiply
    159,166.31x = 219,680.72 × 91,228.82
  4. Step 4: Simplify right side
    159,166.31x = 20,041,212,955.41
  5. Step 5: Solve for x
    x = 20,041,212,955.41/159,166.31
  6. Step 6: Final answer
    x = 125,913.66

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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.