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Finding the Fourth Proportional to 138,765.93, 191,496.99 and 75,103.71

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Solution

The fourth proportional to 138,765.93, 191,496.99 and 75,103.71 is: 103,643.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,765.93 : 191,496.99 = 75,103.71 : x
  2. Step 2: Convert to fraction form
    138,765.93/191,496.99 = 75,103.71/x
  3. Step 3: Cross multiply
    138,765.93x = 191,496.99 × 75,103.71
  4. Step 4: Simplify right side
    138,765.93x = 14,382,134,402.83
  5. Step 5: Solve for x
    x = 14,382,134,402.83/138,765.93
  6. Step 6: Final answer
    x = 103,643.12

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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.