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Finding the Fourth Proportional to 127,281.60, 190,922.40 and 89,956.80

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Solution

The fourth proportional to 127,281.60, 190,922.40 and 89,956.80 is: 134,935.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,281.60 : 190,922.40 = 89,956.80 : x
  2. Step 2: Convert to fraction form
    127,281.60/190,922.40 = 89,956.80/x
  3. Step 3: Cross multiply
    127,281.60x = 190,922.40 × 89,956.80
  4. Step 4: Simplify right side
    127,281.60x = 17,174,768,152.32
  5. Step 5: Solve for x
    x = 17,174,768,152.32/127,281.60
  6. Step 6: Final answer
    x = 134,935.20

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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.