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Finding the Fourth Proportional to 89,814.80, 134,722.20 and 89,296.40

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Solution

The fourth proportional to 89,814.80, 134,722.20 and 89,296.40 is: 133,944.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,814.80 : 134,722.20 = 89,296.40 : x
  2. Step 2: Convert to fraction form
    89,814.80/134,722.20 = 89,296.40/x
  3. Step 3: Cross multiply
    89,814.80x = 134,722.20 × 89,296.40
  4. Step 4: Simplify right side
    89,814.80x = 12,030,207,460.08
  5. Step 5: Solve for x
    x = 12,030,207,460.08/89,814.80
  6. Step 6: Final answer
    x = 133,944.60

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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.