Home / 105,737.54-145,919.68-57,990.46

Finding the Fourth Proportional to 105,737.54, 145,919.68 and 57,990.46

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Solution

The fourth proportional to 105,737.54, 145,919.68 and 57,990.46 is: 80,027.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,737.54 : 145,919.68 = 57,990.46 : x
  2. Step 2: Convert to fraction form
    105,737.54/145,919.68 = 57,990.46/x
  3. Step 3: Cross multiply
    105,737.54x = 145,919.68 × 57,990.46
  4. Step 4: Simplify right side
    105,737.54x = 8,461,949,366.25
  5. Step 5: Solve for x
    x = 8,461,949,366.25/105,737.54
  6. Step 6: Final answer
    x = 80,027.86

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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.