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Finding the Fourth Proportional to 116,213.70, 174,320.55 and 80,784.30

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Solution

The fourth proportional to 116,213.70, 174,320.55 and 80,784.30 is: 121,176.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,213.70 : 174,320.55 = 80,784.30 : x
  2. Step 2: Convert to fraction form
    116,213.70/174,320.55 = 80,784.30/x
  3. Step 3: Cross multiply
    116,213.70x = 174,320.55 × 80,784.30
  4. Step 4: Simplify right side
    116,213.70x = 14,082,363,607.37
  5. Step 5: Solve for x
    x = 14,082,363,607.37/116,213.70
  6. Step 6: Final answer
    x = 121,176.45

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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.