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Finding the Fourth Proportional to 162,387.60, 243,619.80 and 51,579.60

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Solution

The fourth proportional to 162,387.60, 243,619.80 and 51,579.60 is: 77,381.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,387.60 : 243,619.80 = 51,579.60 : x
  2. Step 2: Convert to fraction form
    162,387.60/243,619.80 = 51,579.60/x
  3. Step 3: Cross multiply
    162,387.60x = 243,619.80 × 51,579.60
  4. Step 4: Simplify right side
    162,387.60x = 12,565,811,836.08
  5. Step 5: Solve for x
    x = 12,565,811,836.08/162,387.60
  6. Step 6: Final answer
    x = 77,381.60

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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.