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Finding the Fourth Proportional to 159,897.32, 220,654.82 and 87,297.74

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Solution

The fourth proportional to 159,897.32, 220,654.82 and 87,297.74 is: 120,468.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,897.32 : 220,654.82 = 87,297.74 : x
  2. Step 2: Convert to fraction form
    159,897.32/220,654.82 = 87,297.74/x
  3. Step 3: Cross multiply
    159,897.32x = 220,654.82 × 87,297.74
  4. Step 4: Simplify right side
    159,897.32x = 19,262,667,106.11
  5. Step 5: Solve for x
    x = 19,262,667,106.11/159,897.32
  6. Step 6: Final answer
    x = 120,468.98

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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.