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Finding the Fourth Proportional to 120,878.17, 181,254.69 and 54,260.94

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Solution

The fourth proportional to 120,878.17, 181,254.69 and 54,260.94 is: 81,363.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,878.17 : 181,254.69 = 54,260.94 : x
  2. Step 2: Convert to fraction form
    120,878.17/181,254.69 = 54,260.94/x
  3. Step 3: Cross multiply
    120,878.17x = 181,254.69 × 54,260.94
  4. Step 4: Simplify right side
    120,878.17x = 9,835,049,366.35
  5. Step 5: Solve for x
    x = 9,835,049,366.35/120,878.17
  6. Step 6: Final answer
    x = 81,363.32

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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.