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Finding the Fourth Proportional to 135,038.50, 186,353.13 and 75,422.50

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Solution

The fourth proportional to 135,038.50, 186,353.13 and 75,422.50 is: 104,083.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,038.50 : 186,353.13 = 75,422.50 : x
  2. Step 2: Convert to fraction form
    135,038.50/186,353.13 = 75,422.50/x
  3. Step 3: Cross multiply
    135,038.50x = 186,353.13 × 75,422.50
  4. Step 4: Simplify right side
    135,038.50x = 14,055,218,947.43
  5. Step 5: Solve for x
    x = 14,055,218,947.43/135,038.50
  6. Step 6: Final answer
    x = 104,083.05

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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.