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Finding the Fourth Proportional to 162,000.60, 243,000.90 and 142,317.60

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Solution

The fourth proportional to 162,000.60, 243,000.90 and 142,317.60 is: 213,476.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,000.60 : 243,000.90 = 142,317.60 : x
  2. Step 2: Convert to fraction form
    162,000.60/243,000.90 = 142,317.60/x
  3. Step 3: Cross multiply
    162,000.60x = 243,000.90 × 142,317.60
  4. Step 4: Simplify right side
    162,000.60x = 34,583,304,885.84
  5. Step 5: Solve for x
    x = 34,583,304,885.84/162,000.60
  6. Step 6: Final answer
    x = 213,476.40

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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.