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Finding the Fourth Proportional to 162,069.80, 243,104.70 and 102,947.90

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Solution

The fourth proportional to 162,069.80, 243,104.70 and 102,947.90 is: 154,421.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,069.80 : 243,104.70 = 102,947.90 : x
  2. Step 2: Convert to fraction form
    162,069.80/243,104.70 = 102,947.90/x
  3. Step 3: Cross multiply
    162,069.80x = 243,104.70 × 102,947.90
  4. Step 4: Simplify right side
    162,069.80x = 25,027,118,345.13
  5. Step 5: Solve for x
    x = 25,027,118,345.13/162,069.80
  6. Step 6: Final answer
    x = 154,421.85

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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.