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Finding the Fourth Proportional to 134,460.40, 201,690.60 and 87,458.80

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Solution

The fourth proportional to 134,460.40, 201,690.60 and 87,458.80 is: 131,188.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,460.40 : 201,690.60 = 87,458.80 : x
  2. Step 2: Convert to fraction form
    134,460.40/201,690.60 = 87,458.80/x
  3. Step 3: Cross multiply
    134,460.40x = 201,690.60 × 87,458.80
  4. Step 4: Simplify right side
    134,460.40x = 17,639,617,847.28
  5. Step 5: Solve for x
    x = 17,639,617,847.28/134,460.40
  6. Step 6: Final answer
    x = 131,188.20

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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.