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Finding the Fourth Proportional to 159,506.34, 220,118.58 and 87,886.35

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Solution

The fourth proportional to 159,506.34, 220,118.58 and 87,886.35 is: 121,283.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,506.34 : 220,118.58 = 87,886.35 : x
  2. Step 2: Convert to fraction form
    159,506.34/220,118.58 = 87,886.35/x
  3. Step 3: Cross multiply
    159,506.34x = 220,118.58 × 87,886.35
  4. Step 4: Simplify right side
    159,506.34x = 19,345,418,563.38
  5. Step 5: Solve for x
    x = 19,345,418,563.38/159,506.34
  6. Step 6: Final answer
    x = 121,283.07

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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.