Home / 103,309.13-142,555.66-57,992.10

Finding the Fourth Proportional to 103,309.13, 142,555.66 and 57,992.10

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Solution

The fourth proportional to 103,309.13, 142,555.66 and 57,992.10 is: 80,022.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,309.13 : 142,555.66 = 57,992.10 : x
  2. Step 2: Convert to fraction form
    103,309.13/142,555.66 = 57,992.10/x
  3. Step 3: Cross multiply
    103,309.13x = 142,555.66 × 57,992.10
  4. Step 4: Simplify right side
    103,309.13x = 8,267,101,377.51
  5. Step 5: Solve for x
    x = 8,267,101,377.51/103,309.13
  6. Step 6: Final answer
    x = 80,022.95

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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.