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Finding the Fourth Proportional to 89,898.40, 134,847.60 and 79,530.40

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Solution

The fourth proportional to 89,898.40, 134,847.60 and 79,530.40 is: 119,295.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,898.40 : 134,847.60 = 79,530.40 : x
  2. Step 2: Convert to fraction form
    89,898.40/134,847.60 = 79,530.40/x
  3. Step 3: Cross multiply
    89,898.40x = 134,847.60 × 79,530.40
  4. Step 4: Simplify right side
    89,898.40x = 10,724,483,567.04
  5. Step 5: Solve for x
    x = 10,724,483,567.04/89,898.40
  6. Step 6: Final answer
    x = 119,295.60

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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.