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Finding the Fourth Proportional to 162,368.70, 243,553.05 and 145,455.90

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Solution

The fourth proportional to 162,368.70, 243,553.05 and 145,455.90 is: 218,183.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,368.70 : 243,553.05 = 145,455.90 : x
  2. Step 2: Convert to fraction form
    162,368.70/243,553.05 = 145,455.90/x
  3. Step 3: Cross multiply
    162,368.70x = 243,553.05 × 145,455.90
  4. Step 4: Simplify right side
    162,368.70x = 35,426,228,085.50
  5. Step 5: Solve for x
    x = 35,426,228,085.50/162,368.70
  6. Step 6: Final answer
    x = 218,183.85

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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.