Home / 105,516.83-145,607.49-57,760.95

Finding the Fourth Proportional to 105,516.83, 145,607.49 and 57,760.95

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Solution

The fourth proportional to 105,516.83, 145,607.49 and 57,760.95 is: 79,706.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,516.83 : 145,607.49 = 57,760.95 : x
  2. Step 2: Convert to fraction form
    105,516.83/145,607.49 = 57,760.95/x
  3. Step 3: Cross multiply
    105,516.83x = 145,607.49 × 57,760.95
  4. Step 4: Simplify right side
    105,516.83x = 8,410,426,949.52
  5. Step 5: Solve for x
    x = 8,410,426,949.52/105,516.83
  6. Step 6: Final answer
    x = 79,706.97

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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.