Home / 130,002.53-179,401.30-72,642.78

Finding the Fourth Proportional to 130,002.53, 179,401.30 and 72,642.78

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Solution

The fourth proportional to 130,002.53, 179,401.30 and 72,642.78 is: 100,245.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,002.53 : 179,401.30 = 72,642.78 : x
  2. Step 2: Convert to fraction form
    130,002.53/179,401.30 = 72,642.78/x
  3. Step 3: Cross multiply
    130,002.53x = 179,401.30 × 72,642.78
  4. Step 4: Simplify right side
    130,002.53x = 13,032,209,167.61
  5. Step 5: Solve for x
    x = 13,032,209,167.61/130,002.53
  6. Step 6: Final answer
    x = 100,245.81

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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.