Home / 138,733.02-191,429.91-79,105.50

Finding the Fourth Proportional to 138,733.02, 191,429.91 and 79,105.50

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Solution

The fourth proportional to 138,733.02, 191,429.91 and 79,105.50 is: 109,153.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,733.02 : 191,429.91 = 79,105.50 : x
  2. Step 2: Convert to fraction form
    138,733.02/191,429.91 = 79,105.50/x
  3. Step 3: Cross multiply
    138,733.02x = 191,429.91 × 79,105.50
  4. Step 4: Simplify right side
    138,733.02x = 15,143,158,745.51
  5. Step 5: Solve for x
    x = 15,143,158,745.51/138,733.02
  6. Step 6: Final answer
    x = 109,153.24

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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.