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Finding the Fourth Proportional to 145,101.62, 200,282.06 and 87,741.05

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Solution

The fourth proportional to 145,101.62, 200,282.06 and 87,741.05 is: 121,107.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,101.62 : 200,282.06 = 87,741.05 : x
  2. Step 2: Convert to fraction form
    145,101.62/200,282.06 = 87,741.05/x
  3. Step 3: Cross multiply
    145,101.62x = 200,282.06 × 87,741.05
  4. Step 4: Simplify right side
    145,101.62x = 17,572,958,240.56
  5. Step 5: Solve for x
    x = 17,572,958,240.56/145,101.62
  6. Step 6: Final answer
    x = 121,107.94

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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.