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Finding the Fourth Proportional to 112,657.80, 168,549.30 and 73,291.80

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Solution

The fourth proportional to 112,657.80, 168,549.30 and 73,291.80 is: 109,653.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,657.80 : 168,549.30 = 73,291.80 : x
  2. Step 2: Convert to fraction form
    112,657.80/168,549.30 = 73,291.80/x
  3. Step 3: Cross multiply
    112,657.80x = 168,549.30 × 73,291.80
  4. Step 4: Simplify right side
    112,657.80x = 12,353,281,585.74
  5. Step 5: Solve for x
    x = 12,353,281,585.74/112,657.80
  6. Step 6: Final answer
    x = 109,653.14

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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.