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Finding the Fourth Proportional to 130,314.60, 179,815.02 and 72,950.94

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Solution

The fourth proportional to 130,314.60, 179,815.02 and 72,950.94 is: 100,661.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,314.60 : 179,815.02 = 72,950.94 : x
  2. Step 2: Convert to fraction form
    130,314.60/179,815.02 = 72,950.94/x
  3. Step 3: Cross multiply
    130,314.60x = 179,815.02 × 72,950.94
  4. Step 4: Simplify right side
    130,314.60x = 13,117,674,735.12
  5. Step 5: Solve for x
    x = 13,117,674,735.12/130,314.60
  6. Step 6: Final answer
    x = 100,661.59

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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.