Home / 187,005.40-280,421.70-81,770.20

Finding the Fourth Proportional to 187,005.40, 280,421.70 and 81,770.20

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Solution

The fourth proportional to 187,005.40, 280,421.70 and 81,770.20 is: 122,617.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,005.40 : 280,421.70 = 81,770.20 : x
  2. Step 2: Convert to fraction form
    187,005.40/280,421.70 = 81,770.20/x
  3. Step 3: Cross multiply
    187,005.40x = 280,421.70 × 81,770.20
  4. Step 4: Simplify right side
    187,005.40x = 22,930,138,493.34
  5. Step 5: Solve for x
    x = 22,930,138,493.34/187,005.40
  6. Step 6: Final answer
    x = 122,617.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.