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Finding the Fourth Proportional to 159,506.48, 220,128.77 and 87,886.49

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Solution

The fourth proportional to 159,506.48, 220,128.77 and 87,886.49 is: 121,288.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,506.48 : 220,128.77 = 87,886.49 : x
  2. Step 2: Convert to fraction form
    159,506.48/220,128.77 = 87,886.49/x
  3. Step 3: Cross multiply
    159,506.48x = 220,128.77 × 87,886.49
  4. Step 4: Simplify right side
    159,506.48x = 19,346,344,062.39
  5. Step 5: Solve for x
    x = 19,346,344,062.39/159,506.48
  6. Step 6: Final answer
    x = 121,288.76

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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.