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Finding the Fourth Proportional to 110,281.60, 165,422.40 and 70,915.60

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Solution

The fourth proportional to 110,281.60, 165,422.40 and 70,915.60 is: 106,373.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,281.60 : 165,422.40 = 70,915.60 : x
  2. Step 2: Convert to fraction form
    110,281.60/165,422.40 = 70,915.60/x
  3. Step 3: Cross multiply
    110,281.60x = 165,422.40 × 70,915.60
  4. Step 4: Simplify right side
    110,281.60x = 11,731,028,749.44
  5. Step 5: Solve for x
    x = 11,731,028,749.44/110,281.60
  6. Step 6: Final answer
    x = 106,373.40

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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.