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Finding the Fourth Proportional to 162,130.60, 243,066.30 and 68,559.40

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Solution

The fourth proportional to 162,130.60, 243,066.30 and 68,559.40 is: 102,784.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,130.60 : 243,066.30 = 68,559.40 : x
  2. Step 2: Convert to fraction form
    162,130.60/243,066.30 = 68,559.40/x
  3. Step 3: Cross multiply
    162,130.60x = 243,066.30 × 68,559.40
  4. Step 4: Simplify right side
    162,130.60x = 16,664,479,688.22
  5. Step 5: Solve for x
    x = 16,664,479,688.22/162,130.60
  6. Step 6: Final answer
    x = 102,784.30

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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.