Home / 130,104.39-179,544.36-72,745.76

Finding the Fourth Proportional to 130,104.39, 179,544.36 and 72,745.76

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Solution

The fourth proportional to 130,104.39, 179,544.36 and 72,745.76 is: 100,389.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,104.39 : 179,544.36 = 72,745.76 : x
  2. Step 2: Convert to fraction form
    130,104.39/179,544.36 = 72,745.76/x
  3. Step 3: Cross multiply
    130,104.39x = 179,544.36 × 72,745.76
  4. Step 4: Simplify right side
    130,104.39x = 13,061,090,024.19
  5. Step 5: Solve for x
    x = 13,061,090,024.19/130,104.39
  6. Step 6: Final answer
    x = 100,389.31

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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.