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Finding the Fourth Proportional to 145,855.70, 218,200.35 and 126,350.90

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Solution

The fourth proportional to 145,855.70, 218,200.35 and 126,350.90 is: 189,021.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,855.70 : 218,200.35 = 126,350.90 : x
  2. Step 2: Convert to fraction form
    145,855.70/218,200.35 = 126,350.90/x
  3. Step 3: Cross multiply
    145,855.70x = 218,200.35 × 126,350.90
  4. Step 4: Simplify right side
    145,855.70x = 27,569,810,602.82
  5. Step 5: Solve for x
    x = 27,569,810,602.82/145,855.70
  6. Step 6: Final answer
    x = 189,021.14

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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.