Home / 105,146.91-145,105.22-57,400.62

Finding the Fourth Proportional to 105,146.91, 145,105.22 and 57,400.62

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Solution

The fourth proportional to 105,146.91, 145,105.22 and 57,400.62 is: 79,214.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,146.91 : 145,105.22 = 57,400.62 : x
  2. Step 2: Convert to fraction form
    105,146.91/145,105.22 = 57,400.62/x
  3. Step 3: Cross multiply
    105,146.91x = 145,105.22 × 57,400.62
  4. Step 4: Simplify right side
    105,146.91x = 8,329,129,192.59
  5. Step 5: Solve for x
    x = 8,329,129,192.59/105,146.91
  6. Step 6: Final answer
    x = 79,214.21

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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.