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Finding the Fourth Proportional to 163,518, 245,354.72 and 74,764.68

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Solution

The fourth proportional to 163,518, 245,354.72 and 74,764.68 is: 112,182.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,518 : 245,354.72 = 74,764.68 : x
  2. Step 2: Convert to fraction form
    163,518/245,354.72 = 74,764.68/x
  3. Step 3: Cross multiply
    163,518x = 245,354.72 × 74,764.68
  4. Step 4: Simplify right side
    163,518x = 18,343,867,127.29
  5. Step 5: Solve for x
    x = 18,343,867,127.29/163,518
  6. Step 6: Final answer
    x = 112,182.56

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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.