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Finding the Fourth Proportional to 130,408.40, 179,945.16 and 73,816.40

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Solution

The fourth proportional to 130,408.40, 179,945.16 and 73,816.40 is: 101,856.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,408.40 : 179,945.16 = 73,816.40 : x
  2. Step 2: Convert to fraction form
    130,408.40/179,945.16 = 73,816.40/x
  3. Step 3: Cross multiply
    130,408.40x = 179,945.16 × 73,816.40
  4. Step 4: Simplify right side
    130,408.40x = 13,282,903,908.62
  5. Step 5: Solve for x
    x = 13,282,903,908.62/130,408.40
  6. Step 6: Final answer
    x = 101,856.20

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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.