Home / 81,153.40-121,730.10-50,006.20

Finding the Fourth Proportional to 81,153.40, 121,730.10 and 50,006.20

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Solution

The fourth proportional to 81,153.40, 121,730.10 and 50,006.20 is: 75,009.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,153.40 : 121,730.10 = 50,006.20 : x
  2. Step 2: Convert to fraction form
    81,153.40/121,730.10 = 50,006.20/x
  3. Step 3: Cross multiply
    81,153.40x = 121,730.10 × 50,006.20
  4. Step 4: Simplify right side
    81,153.40x = 6,087,259,726.62
  5. Step 5: Solve for x
    x = 6,087,259,726.62/81,153.40
  6. Step 6: Final answer
    x = 75,009.30

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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.