Home / 105,542.30-145,644-57,794.83

Finding the Fourth Proportional to 105,542.30, 145,644 and 57,794.83

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Solution

The fourth proportional to 105,542.30, 145,644 and 57,794.83 is: 79,754.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,542.30 : 145,644 = 57,794.83 : x
  2. Step 2: Convert to fraction form
    105,542.30/145,644 = 57,794.83/x
  3. Step 3: Cross multiply
    105,542.30x = 145,644 × 57,794.83
  4. Step 4: Simplify right side
    105,542.30x = 8,417,470,220.52
  5. Step 5: Solve for x
    x = 8,417,470,220.52/105,542.30
  6. Step 6: Final answer
    x = 79,754.47

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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.