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Finding the Fourth Proportional to 139,368.40, 192,344.52 and 130,818.14

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Solution

The fourth proportional to 139,368.40, 192,344.52 and 130,818.14 is: 180,544.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,368.40 : 192,344.52 = 130,818.14 : x
  2. Step 2: Convert to fraction form
    139,368.40/192,344.52 = 130,818.14/x
  3. Step 3: Cross multiply
    139,368.40x = 192,344.52 × 130,818.14
  4. Step 4: Simplify right side
    139,368.40x = 25,162,152,595.73
  5. Step 5: Solve for x
    x = 25,162,152,595.73/139,368.40
  6. Step 6: Final answer
    x = 180,544.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.