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Finding the Fourth Proportional to 159,373.44, 219,940.80 and 87,758.40

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Solution

The fourth proportional to 159,373.44, 219,940.80 and 87,758.40 is: 121,109.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,373.44 : 219,940.80 = 87,758.40 : x
  2. Step 2: Convert to fraction form
    159,373.44/219,940.80 = 87,758.40/x
  3. Step 3: Cross multiply
    159,373.44x = 219,940.80 × 87,758.40
  4. Step 4: Simplify right side
    159,373.44x = 19,301,652,702.72
  5. Step 5: Solve for x
    x = 19,301,652,702.72/159,373.44
  6. Step 6: Final answer
    x = 121,109.59

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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.