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Finding the Fourth Proportional to 119,618.40, 179,230.80 and 72,730.08

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Solution

The fourth proportional to 119,618.40, 179,230.80 and 72,730.08 is: 108,975.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,618.40 : 179,230.80 = 72,730.08 : x
  2. Step 2: Convert to fraction form
    119,618.40/179,230.80 = 72,730.08/x
  3. Step 3: Cross multiply
    119,618.40x = 179,230.80 × 72,730.08
  4. Step 4: Simplify right side
    119,618.40x = 13,035,470,422.46
  5. Step 5: Solve for x
    x = 13,035,470,422.46/119,618.40
  6. Step 6: Final answer
    x = 108,975.46

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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.