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Finding the Fourth Proportional to 125,104.76, 187,676.31 and 42,018.20

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Solution

The fourth proportional to 125,104.76, 187,676.31 and 42,018.20 is: 63,033.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,104.76 : 187,676.31 = 42,018.20 : x
  2. Step 2: Convert to fraction form
    125,104.76/187,676.31 = 42,018.20/x
  3. Step 3: Cross multiply
    125,104.76x = 187,676.31 × 42,018.20
  4. Step 4: Simplify right side
    125,104.76x = 7,885,820,728.84
  5. Step 5: Solve for x
    x = 7,885,820,728.84/125,104.76
  6. Step 6: Final answer
    x = 63,033.74

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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.