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Finding the Fourth Proportional to 89,022.80, 133,339.80 and 69,145.40

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Solution

The fourth proportional to 89,022.80, 133,339.80 and 69,145.40 is: 103,567.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,022.80 : 133,339.80 = 69,145.40 : x
  2. Step 2: Convert to fraction form
    89,022.80/133,339.80 = 69,145.40/x
  3. Step 3: Cross multiply
    89,022.80x = 133,339.80 × 69,145.40
  4. Step 4: Simplify right side
    89,022.80x = 9,219,833,806.92
  5. Step 5: Solve for x
    x = 9,219,833,806.92/89,022.80
  6. Step 6: Final answer
    x = 103,567.11

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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.