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Finding the Fourth Proportional to 160,915.60, 241,488.60 and 90,720.40

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Solution

The fourth proportional to 160,915.60, 241,488.60 and 90,720.40 is: 136,145.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,915.60 : 241,488.60 = 90,720.40 : x
  2. Step 2: Convert to fraction form
    160,915.60/241,488.60 = 90,720.40/x
  3. Step 3: Cross multiply
    160,915.60x = 241,488.60 × 90,720.40
  4. Step 4: Simplify right side
    160,915.60x = 21,907,942,387.44
  5. Step 5: Solve for x
    x = 21,907,942,387.44/160,915.60
  6. Step 6: Final answer
    x = 136,145.55

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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.