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Finding the Fourth Proportional to 130,107.64, 179,548.84 and 72,749.02

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Solution

The fourth proportional to 130,107.64, 179,548.84 and 72,749.02 is: 100,393.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,107.64 : 179,548.84 = 72,749.02 : x
  2. Step 2: Convert to fraction form
    130,107.64/179,548.84 = 72,749.02/x
  3. Step 3: Cross multiply
    130,107.64x = 179,548.84 × 72,749.02
  4. Step 4: Simplify right side
    130,107.64x = 13,062,002,152.14
  5. Step 5: Solve for x
    x = 13,062,002,152.14/130,107.64
  6. Step 6: Final answer
    x = 100,393.81

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1.5x scale

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.