Home / 138,985.07-191,799.90-75,322.71

Finding the Fourth Proportional to 138,985.07, 191,799.90 and 75,322.71

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Solution

The fourth proportional to 138,985.07, 191,799.90 and 75,322.71 is: 103,945.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,985.07 : 191,799.90 = 75,322.71 : x
  2. Step 2: Convert to fraction form
    138,985.07/191,799.90 = 75,322.71/x
  3. Step 3: Cross multiply
    138,985.07x = 191,799.90 × 75,322.71
  4. Step 4: Simplify right side
    138,985.07x = 14,446,888,245.73
  5. Step 5: Solve for x
    x = 14,446,888,245.73/138,985.07
  6. Step 6: Final answer
    x = 103,945.62

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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.