Home / 130,004.53-179,404.06-72,644.78

Finding the Fourth Proportional to 130,004.53, 179,404.06 and 72,644.78

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Solution

The fourth proportional to 130,004.53, 179,404.06 and 72,644.78 is: 100,248.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,004.53 : 179,404.06 = 72,644.78 : x
  2. Step 2: Convert to fraction form
    130,004.53/179,404.06 = 72,644.78/x
  3. Step 3: Cross multiply
    130,004.53x = 179,404.06 × 72,644.78
  4. Step 4: Simplify right side
    130,004.53x = 13,032,768,469.81
  5. Step 5: Solve for x
    x = 13,032,768,469.81/130,004.53
  6. Step 6: Final answer
    x = 100,248.57

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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.