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Finding the Fourth Proportional to 130,056, 179,475.03 and 72,696.45

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Solution

The fourth proportional to 130,056, 179,475.03 and 72,696.45 is: 100,319.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,056 : 179,475.03 = 72,696.45 : x
  2. Step 2: Convert to fraction form
    130,056/179,475.03 = 72,696.45/x
  3. Step 3: Cross multiply
    130,056x = 179,475.03 × 72,696.45
  4. Step 4: Simplify right side
    130,056x = 13,047,197,544.64
  5. Step 5: Solve for x
    x = 13,047,197,544.64/130,056
  6. Step 6: Final answer
    x = 100,319.84

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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.