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Finding the Fourth Proportional to 159,853.94, 220,603.80 and 87,261.14

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Solution

The fourth proportional to 159,853.94, 220,603.80 and 87,261.14 is: 120,423.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,853.94 : 220,603.80 = 87,261.14 : x
  2. Step 2: Convert to fraction form
    159,853.94/220,603.80 = 87,261.14/x
  3. Step 3: Cross multiply
    159,853.94x = 220,603.80 × 87,261.14
  4. Step 4: Simplify right side
    159,853.94x = 19,250,139,076.33
  5. Step 5: Solve for x
    x = 19,250,139,076.33/159,853.94
  6. Step 6: Final answer
    x = 120,423.30

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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.