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Finding the Fourth Proportional to 138,625.83, 191,303.37 and 74,963.34

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Solution

The fourth proportional to 138,625.83, 191,303.37 and 74,963.34 is: 103,449.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,625.83 : 191,303.37 = 74,963.34 : x
  2. Step 2: Convert to fraction form
    138,625.83/191,303.37 = 74,963.34/x
  3. Step 3: Cross multiply
    138,625.83x = 191,303.37 × 74,963.34
  4. Step 4: Simplify right side
    138,625.83x = 14,340,739,568.46
  5. Step 5: Solve for x
    x = 14,340,739,568.46/138,625.83
  6. Step 6: Final answer
    x = 103,449.26

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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.