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Finding the Fourth Proportional to 89,217.60, 133,696.80 and 75,998.40

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Solution

The fourth proportional to 89,217.60, 133,696.80 and 75,998.40 is: 113,887.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,217.60 : 133,696.80 = 75,998.40 : x
  2. Step 2: Convert to fraction form
    89,217.60/133,696.80 = 75,998.40/x
  3. Step 3: Cross multiply
    89,217.60x = 133,696.80 × 75,998.40
  4. Step 4: Simplify right side
    89,217.60x = 10,160,742,885.12
  5. Step 5: Solve for x
    x = 10,160,742,885.12/89,217.60
  6. Step 6: Final answer
    x = 113,887.20

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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.