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Finding the Fourth Proportional to 128,522.76, 177,605.40 and 96,636.30

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Solution

The fourth proportional to 128,522.76, 177,605.40 and 96,636.30 is: 133,541.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,522.76 : 177,605.40 = 96,636.30 : x
  2. Step 2: Convert to fraction form
    128,522.76/177,605.40 = 96,636.30/x
  3. Step 3: Cross multiply
    128,522.76x = 177,605.40 × 96,636.30
  4. Step 4: Simplify right side
    128,522.76x = 17,163,128,716.02
  5. Step 5: Solve for x
    x = 17,163,128,716.02/128,522.76
  6. Step 6: Final answer
    x = 133,541.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.