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Finding the Fourth Proportional to 162,145.60, 243,088.80 and 68,574.40

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Solution

The fourth proportional to 162,145.60, 243,088.80 and 68,574.40 is: 102,806.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,145.60 : 243,088.80 = 68,574.40 : x
  2. Step 2: Convert to fraction form
    162,145.60/243,088.80 = 68,574.40/x
  3. Step 3: Cross multiply
    162,145.60x = 243,088.80 × 68,574.40
  4. Step 4: Simplify right side
    162,145.60x = 16,669,668,606.72
  5. Step 5: Solve for x
    x = 16,669,668,606.72/162,145.60
  6. Step 6: Final answer
    x = 102,806.79

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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.