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Finding the Fourth Proportional to 135,665.60, 187,205.19 and 75,235.19

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Solution

The fourth proportional to 135,665.60, 187,205.19 and 75,235.19 is: 103,817.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,665.60 : 187,205.19 = 75,235.19 : x
  2. Step 2: Convert to fraction form
    135,665.60/187,205.19 = 75,235.19/x
  3. Step 3: Cross multiply
    135,665.60x = 187,205.19 × 75,235.19
  4. Step 4: Simplify right side
    135,665.60x = 14,084,418,038.64
  5. Step 5: Solve for x
    x = 14,084,418,038.64/135,665.60
  6. Step 6: Final answer
    x = 103,817.17

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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.