Home / 138,803.09-191,548.68-75,140.74

Finding the Fourth Proportional to 138,803.09, 191,548.68 and 75,140.74

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Solution

The fourth proportional to 138,803.09, 191,548.68 and 75,140.74 is: 103,694.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,803.09 : 191,548.68 = 75,140.74 : x
  2. Step 2: Convert to fraction form
    138,803.09/191,548.68 = 75,140.74/x
  3. Step 3: Cross multiply
    138,803.09x = 191,548.68 × 75,140.74
  4. Step 4: Simplify right side
    138,803.09x = 14,393,108,603.48
  5. Step 5: Solve for x
    x = 14,393,108,603.48/138,803.09
  6. Step 6: Final answer
    x = 103,694.44

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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.