Home / 130,307.08-179,808.60-72,949.54

Finding the Fourth Proportional to 130,307.08, 179,808.60 and 72,949.54

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Solution

The fourth proportional to 130,307.08, 179,808.60 and 72,949.54 is: 100,661.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,307.08 : 179,808.60 = 72,949.54 : x
  2. Step 2: Convert to fraction form
    130,307.08/179,808.60 = 72,949.54/x
  3. Step 3: Cross multiply
    130,307.08x = 179,808.60 × 72,949.54
  4. Step 4: Simplify right side
    130,307.08x = 13,116,954,658.04
  5. Step 5: Solve for x
    x = 13,116,954,658.04/130,307.08
  6. Step 6: Final answer
    x = 100,661.87

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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.