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Finding the Fourth Proportional to 155,903.55, 233,800.65 and 80,998.80

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Solution

The fourth proportional to 155,903.55, 233,800.65 and 80,998.80 is: 121,469.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,903.55 : 233,800.65 = 80,998.80 : x
  2. Step 2: Convert to fraction form
    155,903.55/233,800.65 = 80,998.80/x
  3. Step 3: Cross multiply
    155,903.55x = 233,800.65 × 80,998.80
  4. Step 4: Simplify right side
    155,903.55x = 18,937,572,089.22
  5. Step 5: Solve for x
    x = 18,937,572,089.22/155,903.55
  6. Step 6: Final answer
    x = 121,469.79

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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.