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Finding the Fourth Proportional to 162,572.10, 243,820.68 and 78,289.62

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Solution

The fourth proportional to 162,572.10, 243,820.68 and 78,289.62 is: 117,416.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,572.10 : 243,820.68 = 78,289.62 : x
  2. Step 2: Convert to fraction form
    162,572.10/243,820.68 = 78,289.62/x
  3. Step 3: Cross multiply
    162,572.10x = 243,820.68 × 78,289.62
  4. Step 4: Simplify right side
    162,572.10x = 19,088,628,385.34
  5. Step 5: Solve for x
    x = 19,088,628,385.34/162,572.10
  6. Step 6: Final answer
    x = 117,416.39

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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.