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Finding the Fourth Proportional to 89,801.60, 134,702.40 and 72,305.60

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Solution

The fourth proportional to 89,801.60, 134,702.40 and 72,305.60 is: 108,458.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,801.60 : 134,702.40 = 72,305.60 : x
  2. Step 2: Convert to fraction form
    89,801.60/134,702.40 = 72,305.60/x
  3. Step 3: Cross multiply
    89,801.60x = 134,702.40 × 72,305.60
  4. Step 4: Simplify right side
    89,801.60x = 9,739,737,853.44
  5. Step 5: Solve for x
    x = 9,739,737,853.44/89,801.60
  6. Step 6: Final answer
    x = 108,458.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.