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Finding the Fourth Proportional to 159,421.41, 220,011.50 and 87,801.41

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Solution

The fourth proportional to 159,421.41, 220,011.50 and 87,801.41 is: 121,171.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,421.41 : 220,011.50 = 87,801.41 : x
  2. Step 2: Convert to fraction form
    159,421.41/220,011.50 = 87,801.41/x
  3. Step 3: Cross multiply
    159,421.41x = 220,011.50 × 87,801.41
  4. Step 4: Simplify right side
    159,421.41x = 19,317,320,685.75
  5. Step 5: Solve for x
    x = 19,317,320,685.75/159,421.41
  6. Step 6: Final answer
    x = 121,171.43

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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.