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Finding the Fourth Proportional to 162,486.10, 243,729.15 and 115,246.90

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Solution

The fourth proportional to 162,486.10, 243,729.15 and 115,246.90 is: 172,870.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,486.10 : 243,729.15 = 115,246.90 : x
  2. Step 2: Convert to fraction form
    162,486.10/243,729.15 = 115,246.90/x
  3. Step 3: Cross multiply
    162,486.10x = 243,729.15 × 115,246.90
  4. Step 4: Simplify right side
    162,486.10x = 28,089,028,977.14
  5. Step 5: Solve for x
    x = 28,089,028,977.14/162,486.10
  6. Step 6: Final answer
    x = 172,870.35

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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.