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Finding the Fourth Proportional to 94,720.40, 142,157.40 and 91,648.40

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Solution

The fourth proportional to 94,720.40, 142,157.40 and 91,648.40 is: 137,546.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,720.40 : 142,157.40 = 91,648.40 : x
  2. Step 2: Convert to fraction form
    94,720.40/142,157.40 = 91,648.40/x
  3. Step 3: Cross multiply
    94,720.40x = 142,157.40 × 91,648.40
  4. Step 4: Simplify right side
    94,720.40x = 13,028,498,258.16
  5. Step 5: Solve for x
    x = 13,028,498,258.16/94,720.40
  6. Step 6: Final answer
    x = 137,546.91

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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.